Questions

1 Let w x represent the weight of the sand on a scale minutes after we started to unload the sand If the rate at which the weight of the sand changes with respect to time is x in pounds per minutes the expression that gives the total weight of the sand in pounds on the scale z minutes after we started to unload the sand is x 20 S 0 w t dt We assume that there was 20 lbs of sand on the scale when we started What is the meaning and measurement of w 6 OA the average weigth of sand unloaded each minute during the first 6 minutes in pounds OB the total weigth of sand on the scale after 6 minutes in pounds C the total weigth of sand unloaded during the first 6 minutes in pounds OD the average weigth of sand unloaded each minute during the first 6 minutes in pounds per minutes OE the average rate at which the weight of the sand is unloaded each minute during the first 6 minutes in pounds per minutes F the total weigth of sand unloaded during the 6th minute in pounds Let w 2 represent the weight of the sand on a scale z minutes after we started to unload the sand If the rate at which the weight of the sand changes with respect to time is a in pounds per minutes the expression that gives the total weight of the sand in pounds on the scale z minutes after we started to unload the sand is x 20 w t dt We assume that there was 20 lbs of sand on the scale when we started What is the meaning and measurement of 0 6 Lw t dt A the total weigth of sand unloaded during the first 6 minutes in pounds B the average weigth of sand unloaded each minute during the first 6 minutes in pounds C the total weigth of sand on the scale after 6 minutes in pounds D the average weigth of sand unloaded each minute during the first 6 minutes in pounds per minutes E the total weigth of sand unloaded during the 6th minute in pounds

The following represents the probability distribution for the daily demand of computers at a local store Demand Probability 0 0 05 1 0 20 2 0 35 3 0 25 0 15 What is the expected daily demand 01 1 65 2 2 25

38 42 Sylvester files as a single taxpayer during 2023 He itemizes deductions for regular tax purposes He paid charitable contributions of 7 700 real estate taxes of 1 100 state income taxes of 6 450 and mortgage interest of 2 900 on 30 450 of acquisition indebtedness on his home Sylvester s regular taxable income is 132 000 What is Sylvester s AMTI Answer is complete but not entirely correct

The probability density function for a uniform distribution ranging between 3 and 8 is undefined any positive value 0 2 5

Stephanie owns a gas station whose sales are uniformly distributed If the probability of selling between 3 000 to 7 000 gallons of gas on any given day is 25 and the minimum quantity she sells on any given day is 2 700 gallons what is the maximum amount of gasoline she sells on any day 16 000 gallons 17 350 gallons 18 700 gallons 20 050 gallons

You may need to use the appropriate technology to answer this question The probability that Pete will catch fish when he goes fishing is 0 84 Pete is going to fish 3 days next week Define the random variable x to be the number of days Pete catches fish What is the probability that Pete will catch fish on one day or less 0 065 0 069 0 840 0 935

You may need to use the appropriate appendix table or technology to answer this question The student body of a large university consists of 60 self identifying female students A random sample of 7 students is selected What is the probability that among the students in the sample at least 6 do not identify as female 0 0280 0 0774 0 1586 0 9720

You may need to use the appropriate appendix table or technology to answer this question Professor Avanti s Stats test scores distributed normally had a mean of 74 He says anyone scoring below 60 will fail the class This grading scheme failed 6 9 of the class What was the standard deviation of the test scores 1 48 7 70 9 44 12 85

Four percent of the customers of a mortgage company default on their payments A sample of nine customers is selected What is the probability that exactly two customers in the sample will default on their payments 0 0012 0 0368 0 0433 0 0866

A value of 0 5 that is added to or subtracted from a value of x when the continuous normal distribution is used to approximate the discrete binomial distribution is called a probability density factor continuity approximation factor O continuity correction factor factor of conversion

The variance Var x for the binomial distribution is given by which equation np n 1 n 1 p np 1 p np 1 np

12 Forty percent of the students in a class of 600 are planning to go to graduate school What is the standard deviation of this binomial distribution 0 40 60 144

Which of the following is a required condition for a discrete probability function f x 0 for all values of x Of x 0 for all values of x f x 1 for all values of x f x 1 for all values of x

If F x f xf xf x where f 1 3 f 3 5 f 1 3 f 3 4 and f 5 5 find F 1 F 1

A probability distribution showing the probability of x successes in n trials where the probability of success does not change from trial to trial is termed a uniform probability distribution normal probability distribution binomial probability distribution hypergeometric probability distribution

are the functions whose graphs are shown let u x f g x v x g f x and w x g g x Find each derivative if it exists If it does not exist explain why If an answer does not exist ent 0 f 9 a u 1 It does exist Ou 1 does not exist because f 1 does not exist Ou 1 does not exist because g 1 does not exist Ou 1 does not exist because f 3 does not exist Ou 1 does not exist because g 2 does not exist b v 1 It does exist O v 1 does not exist because f 1 does not exist Ov 1 does not exist because g 1 does not exist Ov 1 does not exist because f 3 does not exist v 1 does not exist because g 2 does not exist c w 1 It does exist Ow 1 does not exist because f 1 does not exist w 1 does not exist because g 1 does not exist w 1 does not exist because f 3 does not exist Ow 1 does not exist because g 2 does not exist

It takes 9 hours to fill a pool with the inlet pipe A full pool can be emptied in 11 hours with the outlet pipe How long will it take to fill the pool if the pool starts out empty and both pipes are open

Evaluate the following definite integrals using a net area interpretation a b C 3 x 3 dx 6 3 x 3 d 6 a x 3 dx

a Suppose that a cyclist is riding on a straight road and the velocity of the bike at various times is recorded in the following table t in hours 0 4 0 8 1 2 1 6 2 0 v t in km h 20 18 15 19 18 14 Calculate L5 for v t over 0 2 and explain its physical meaning b A group takes a road trip from Kelowna to Radium Hot Springs 451 km away according to their map To pass the time the passengers note the speed of the car every few minutes using the odometer and find that the velocity of the car in km h at time t in hours can be approximated by the following continuous curve V 100 95 90 85 80 0 3 Approximate R10 and L10 of v t over 0 5 and interpret their meaning physically

3 Approximate the definite integral f x dx using the Riemann sums R4 L4 and M4 in turn Use sketches to determine which of R4 L4 and M4 is a lower bound for the integral an upper bound for the integral the best approximation for the integral

The critical value is 1 717 a 0 05 JF 22 0 05

A company looks to maximize its profits a The demand function relates the price of a product and the quantity sold Suppose that the company sells 1000 units when the price is 10 dollars and sells 20 fewer units every time the price is increased by one dollar selling the corresponding amount more due to price decreases Find a formula for f p the number of goods sold when the price is p dollars b The revenue is the money the company receives from sales Find a formula for R g p the revenue the company receives when the price is p dollars Hint revenue is the price times the quantity sold c The company can manufacturer goods for a cost of C 1000 2x dollars Find a formula for C h p the cost of producing the number of goods sold when the price is p dollars d The profit is revenue minus cost Find a formula for P j p the profit earned by the company when the price is p dollars What price is a critical number for profit Consider all positive prices p 0 as your domain e Classify the above critical number as corresponding to a local maximum by using a calculator to test nearby values Then argue why this must be the absolute maximum on the domain p 0

3 Given the sketch of a piecewise function f x over the interval 0 5 calculate the exact value of the integral al 5 f x dx f x

3 Please use Microsoft equation maker to write the formula for calculating d effect size for an independent samples t test d 2

X Y 1 1 2 3 4 5 6 6 8 3 9 6 6 8 5 8 4 9 3 9 2 8

1 Let w x represent the weight of the sand on a scale x minutes after we started to unload the sand If the rate at which the weight of the sand changes with respect to time is w x in pounds per minutes the expression that gives the total weight of the sand in pounds on the scale z minutes after we started to unload the sand is w x 20 w t dt We assume that there was 20 lbs of sand on the scale when we started What is the meaning and measurement of w 6 A the average weigth of sand unloaded each minute during the first 6 minutes in pounds OB the total weigth of sand on the scale after 6 minutes in pounds O C the total weigth of sand unloaded during the first 6 minutes in pounds OD the average weigth of sand unloaded each minute during the first 6 minutes in pounds per minutes OE the average rate at which the weight of the sand is unloaded each minute during the first 6 minutes in pounds per minutes OF the total weigth of sand unloaded during the 6th minute in pounds 1 Let w x represent the weight of the sand on a scale x minutes after we started to unload the sand If the rate at which the weight of the sand changes with respect to time is w in pounds per minutes the expression that gives the total weight of the sand in pounds on the scale z minutes after we started to unload the sand is w x 20 w t dt We assume that there was 20 lbs of sand on the scale when we started What is the meaning and measurement of w t dt OA the total weigth of sand unloaded during the first 6 minutes in pounds OB the average weigth of sand unloaded each minute during the first 6 minutes in pounds O C the total weigth of sand on the scale after 6 minutes in pounds D the average weigth of sand unloaded each minute during the first 6 minutes in pounds per minutes OE the total weigth of sand unloaded during the 6th minute in pounds F the average rate at which the weight of the sand is unloaded each minute during the first 6 minutes in pounds per minutes

The table gives temperatures in degrees Fahrenheit in a certain town on a given day The sinusoidal functioni F t 8 cos t c 30 models the data where F t is the temperature in F at time t in hours past 12 midnight and c is a constant Which of the following is true about the value of e A B D The value of cis 2 because this accounts for a phase shift of g t 8 cos t 30 that aligns a minimum value of the data set with a minimum value of g The value of cis 2 because this accounts for a vertical shift of g t 8 cos t 30 that aligns a minimum value of the data set with a minimum value of g The value of c is 14 because this accounts for a phase shift of g t 8 cos t 30 that aligns a maximum value of the data set with a maximum value of g The value of cis 14 because this accounts for a vertical shift of g t 8 cos t 30 that aligns a maximum value of the data set with a maximum value of g

Write a linear function f that has the indicated values Sketch the graph of f f 5 17 f 2 11 f x Simplify your answer Type an expression using x as the variable Type your answer in slope intercept form Use the graphing tool to graph the function Click to enlarge graph A

The graph of y f bx is a horizontal compression of the graph of y f x if b The graph of y f bx is a horizontal compression of the graph of y f x if b 1

Write an equation for a function whose graph fits the description given below The graph of f x x3 is shifted five units left stretched vertically by a factor of 2 reflected in the y axis and shifted six units up What is the equation of the described function g x

Specimen heating The fraction of the energy in the incident electron beam which reappears in the form of X rays light etc is small most being converted into heat in the target The temperature rise AT is expressed as AT 4 8Egl kd Eo is the incident electron energy keV the current A k the thermal conductivity Wcm K1 and d the beam diameter m Metals k 1 4 AT is negligible Mica k 6x103 Eo 20 keV 10 nA d 1 m T 160K

Use inverse trigonometric functions to find the solutions of the equation that are in the given interval and approximate the solutions to four decimal places Enter your answers as a comma separated list 3 sin 9 sint 5 0 2 2

Select the correct choices that complete the sentence below If f 4 16 and f 4 16 then f have an inverse because

x y 3x y x Ex 5 Ex 5 12 8

Write an equation for a function whose graph fits the description given below The graph of f x x is shifted six units right compressed horizontally by a factor of 5 reflected in the x axis and shifted three units down What is the equation of the described function g x

Write an equation for a function whose graph fits the following description The graph of f x x is shifted 5 units right reflected about the x axis and shifted 7 units up The equation of the function that fits the description is f x

Professional tennis player Serena Williams has a career win record of 81 If we took a simple random sample of 55 of her matches what is the probability that at least 45 would be wins USE SALT a What is the mean of the sampling distribution of the sample proportion 0 81 b What is the standard deviation of the sampling distribution of the sample proportion Round your answer to four decimal places 0 0529 c The shape of the sampling distribution of the sample proportion is approximately normal Which of the following choices justifies that statement OA random sample was taken We have sampled less than 10 of the population The sample size is greater than 30 np 10 and n 1 p 10 d If we took a simple random sample of 55 of Williams s matches what is the probability that at least 45 would be wins Use a table or technology Round your answer to four decimal places X

Multiply Write your answer in simplest form 6 6k236k 54 k 6k 9

vide Write your answer in simplest f 75 5 6 s 1 3

Multiply Write your answer in simplest form 3 1 3 1

Multiply Write your answer in simplest form 2c 23c 12 2c 5 2c 5 C 12

Divide Simplify your ans 17p 2 17p 8np

3 Which of the ordered pairs below is a solution to the system of equations a 10 0 b 0 8 c 12 2 d 2 12 x y 10 2y x 16

HW 2 12 Given the system of equations below would it be better to solve by elimination or substitution explaining why Then solve listing your answer as an ordered pair 2x y 12 2x 4y 30

walk through every step that is involved in generating an ATP NADH or FADH2 include the names structures and enzyme for each step From there look up the conversion rates from NADH and FADH2 to ATP and calculate exactly how 30 ATP are formed Also include any step which uses an ATP this will count against the total ATP formed

The differentiation rule that helps us understand why the Integration by Parts rule works is A The product rule B Both rules C None of these D The chain rule

Find the area of the bolded sector Leave your answer exact Your answer will be inform with a and b as integers in reduced form Fill in the blanks with the values of a and b 240 14 km Area square yards a b

Given that f x dx 2 check all integrals that are possible to find A None of these B fo f 2x dx c f 2f x dx D f f 2x dx E frd 2f x dx

20 As shown in the diagram below the angle of elevation from a point on the ground to the top of the tree is 34 34 If the point is 20 feet from the base of the tree what is the height of the tree to the nearest tenth of a foot 1 29 7 2 16 6 3 13 5 4 11 2

Study the following information The process below details the Federal Government s actions involved combating which which of the following economic issues The Federal in Households and Ag Government reduces taxes individuals cut spending d A recession O Unemployment