Questions

2 Let A 2 3i B 5 4i be two points in the complex plane a What is the equation of the rotation of angle 0 about A f z b Find CEC so that AABC is equilateral and the vertices A B C are oriented counterclockv

The number of bacteria in a culture is increasing according to the law of exponential growth The initial population is 240 bacteria and the population after 9 hours is double the population after 1 hour How many bacteria will there be after 4 hours Round you answer to the nearest whole number bacteria

Find dy by implicit differentiation 4 3 4 3 X 4

The Wechsler Adult Intelligence Scale WAIS is the most common IQ test The distribution of scores for adults taking the WAIS is approximately Normal with a mean of 100 and a standard deviation of 15 Use the 68 95 99 7 rule to answer the questions about WAIS scores Calling itself the high IQ society MENSA requires an IQ score of 130 or higher for membership What percentage of adults taking the WAIS test qualify for membership Enter your answer rounded to the nearest tenth of a percent Centage

The Wechsler Adult Intelligence Scale WAIS is the most common IQ test The distribution of scores for adults taking the WAIS is approximately Normal with a mean of 100 and a standard deviation of 15 Use the 68 95 99 7 rule to answer the questions about WAIS scores Macmillan Learning What percentage of adults score above 100 68 2 5 0 3 50 What percentage of adults score above 145 16 0 15 0 3 99 7

Given a population with mean m 60 which of the following values for the population standard deviation would cause X 68 to have the most extreme position in the distribution O o 2 O 3 0 0 5 12 4

Self Reflection 1 Did you have a goal or a plan when you thought about what you were going to shoot Why or why not What was the plan 2 Why did you choose to use the background and base 3 I struggled the most with 4 What I liked the most was 5 I wish that I

Which of the following symbols identifies the population standard deviation Oo Os 0

X 165 12 42 Y 240 Z 117 Fit O Background O 1 00000 115 0000 Grayscale 6

A car dealership s goal is to sell a mean of 35 cars per day In one week it sold the following numbers of cars each day 44 35 23 29 38 30 21 How many more cars would it have had to sell during the week to meet its goal O A 15 OB 5 OC 25 D 35

A population of N 6 scores has ZX 12 and X 54 What is the value of SS for this population 05 O 54 O 30

For a sample with M 40 and s4 about 95 of the individuals will have scores between X 32 and X 48 O True False

You have a score of X 75 on a statistics exam The mean score for the class on the exam is u 70 Which of the following values for the standard deviation would give you the highest position within the class O g 1 Oo 12 O a 5 O 10

For a population of N 4 scores with ZX 10 and X 30 SS 5 False O True

There is a six point difference between two sample means If the two samples have the same variance then which of the following values for the variance would make the mean difference easiest to see in a graph showing the two distributions 4 Os 16 Os 8 Os 2 O s 64

You have a score of X 65 on a math exam The mean score for the class on the exam is u 70 Which of the following values for the standard deviation would give you the most favorable position within the class 0 0 5 Oo 0 O g 10 1 4

After a researcher adds 5 points to every score in a sample the standard deviation is found to be s 10 The original sample had a standard deviation of s 5 True O False

A sample of n 7 scores has SS 42 The variance for this sample is s 6 False True

What is the value of SS sum of squared deviations for the following population Population 2 3 0 5 38 O 13 O 38 4 9 50 13 4 3 25

A population with SS 90 and a variance of 9 has N 10 scores False True

A sample consists of n 16 scores How many of the scores are used to calculate the range O 16 04 08

A sample with a variance of 25 has a standard deviation equal to 5 points O False O True

If the population variance is 5 then the population standard deviation is o 25 O False True

To measure the height of the cloud cover at an airport a worker shines a spotlight upward at an angle 75 from the horizontal An observer D 525 m away measures the angle of elevation to the spot of light to be 45 Find the heig the cloud cover Round your answer to the nearest meter 724 Er an exact number m 45 75

Each of 35 samples has a different standard deviation How many of the 35 samples could be from the same population A 35 OB 34 OC 32 OD 33

What brain structure is missing right fusiform gyrus left fusiform gyrus right amygdala left hippocampus

The first quartile of a data set is 41 and the third quartile is 57 Which of these values in the data set is an outlier A 39 OB 83 C 19 OD 73

If there are 16 values in a data set in order from smallest to largest what is the median of the data set OA The mean of the 7th and 8th values OB The 8th value OC The 7th value OD The mean of the 8th and 9th values

COS COS 1 COS 11x 11x 6 COS 6 Simplify your answer Type an exact answer using x as needed Use integers or fractions for any numbers in the expression

C 1 1 x dx

What is the interquartile range of the following data set 46 27 48 96 61 84 29 1 64 5 34 OA 73 OB 46 O C 37 D 19

Write the following as an algebraic expression in u where u 0 ec 14 CSC Choose the correct answer below O A O C u 16 4 2 u 16 OB 16 OD u 16

If a sample of 69 students is taken from a population of 508 students the population variance o is the variance of how many students heights OA Both 69 and 508 OB 69 OC Neither 69 nor 508 O D 508

Simplify the expression to one term Graph the original function and your simplified version to verify they are identical cos 4x cos 2x sin 4 x sin 2x

What is the first quartile of the following data set OA 21 OB 20 OC 23 O D 18 18 20 21 23 24 26 29 30 34 37 40

d the exact value of the expression arccos arccos Type an exact answer using as n

4 Microbial fuel cells have the potential to aid waste treatment and other forms of bioremediation Label the following small scale representation of one such device CO H H O Oxygen Water H O C B Reduction Oxidation Anode Proton permeable membrane Organic waste products Cathode

me exact value of the expression cos 1 C 1 COS Type an exact answer using as

What is the first quartile of the data set represented by the box plot shown below 13 OA 40 O B 25 OC 20 OD 13 20 25 40 48

1 1 sin x 1 1 sin x Choose the correct result OA 2 sin x cos x O C 1 2 1 sin x O B 1 2 cos x OD 2 cos x sin x

If the formula X 1122X x is used to find the mean of the following sample n1 what is the value of n 51 37 83 44 52 19 99 7 36 88 OA 11 OB 10 OC 9 D 12

K cotx sin x cotx sin x

If the variance of the data values in a population is 169 what is the standard deviation of the data values O A 13 OB 17 O OD 15 C 11

Find the approximate value in degrees of the expression using a calculator csc 6 56 S 20 csc 6 56 Type your answer in degrees Round to two decimal places as ne

K Write the following expression in terms of sine and cosine and simplify it The final expression does not necessarily have to be in terms of sine and cosine 2 1 sin x 1 sin x www

14 12 The method developed in Problem 14 11 was used for the routine determination of iron in 25 0 ml aliquots of groundwater Express the concentration as ppm Fe in samples that yielded the accompanying absorbance data 1 00 cm cell Calculate the relative standard deviation of the result Repeat the calculation assuming the absorbance data are means of three measurements c 0 068 e 1 512 d 1 009 f 0 546 a 0 143 b 0 675

If the standard deviation of the data values in a sample is 14 what is the variance of the data values OA 225 OB 196 O c 256 OD 144

Choose the correct answer below O 1 sec x

the approximate value in degrees of the expression using a calculator csc 6 41 CSC 6 41 Type your answer in degrees Round to two decimal pla

exact value of the expression cos 0 0 COS Type an exact answer us