Statistics Questions

8 pts We want to estimate the proportion of University of Montana Missoula College students who support a new bill regarding minimum wage We collect a simple random sample from 200 students and 109 say they support the new bill Construct a 95 confidence interval estimating the proportion of UM MC students who support the bill a What is our sample statistic p

5 8 pts The amount of time students spend on a statistics assignment has a standard deviation of o 11 minutes If we take a random sample of 36 students and they average 42 minutes on their assignment construct and interpret a 95 confidence interval estimating the true population average amount of time it takes to complete the assignment a What is the sample statistic x

1 Twelve percent of people in a city eligible to donate blood actually do You randomly select four eligible blood donors and ask them if they donate blood Complete parts a through d below a Find the mean of the binomial distribution H b Find the variance of the binomial distribution 0 Round to the nearest hundredth as needed Round to the nearest hundredth as needed c Find the standard deviation of the binomial distribution 0 Round to the nearest hundredth as needed d Interpret the results in the context of the real life situation On average eligible adult s out of every 4 gives blood The standard deviation is four eligible adults the number of adults who donate blood would differ from the average number by no more than Type integers or decimals rounded to the nearest hundredth as needed so in most samples of

Obama in 2010 was the most significant regulatory reform of the United States healthcare system since the passage of Medicare and Medicaid in 1965 The law was designed to expand insurance coverage and reduce the costs of health care Some elements of the law such are banning insurance companies from denying coverage to people with pre existing conditions are popular while other provisions such as the individual mandate are unpopular Opinions on the law vary with some wanting to keep the law as it it others favor fixing the law and some favor repealing the law in its entirity The middle position has been gaining traction recently and in a Rasmussen Reports poll conducted January 5 2017 567 out of 1013 randomly selected likely voters want Congress and the President to fix the law a piece at a time 0 5597 Joss a Find the point estimate for the proportion of Americans who want Congress and the President to fix the law a piece at a time Round your answer to 4 decimal places AFFORDABLE CARE ACT 0 0156 b Find the margin of error for a 95 confidence interval ound your answer to 4 decimal places c Construct the 95 confidence interval for the proportion of Americans who want Congress and the President to fix the law a piece at a time Enter your answer as an open interval of the form a b and round to 3 decimal places d Can you conclude that more than half of Americans want Congress and the President to fix the law a piece at a time O No conclusions can be drawn since the confidence interval contains 0 50 O Yes the entire confidence is above 0 50 O No the entire confidence interval is below 0 50

Out of 300 people sampled 75 had children Based on this construct a 90 confidence interval for the true population proportion of people with children Preliminary a Is it safe to assume that n 5 of all people with children Yes O No b Verify np 1 P 10 Round your answer to one decimal place np 1 p 56 25 Confidence Interval What is the 90 confidence interval to estimate the population proportion Round your answer to three decimal places

Obama in 2010 was the most significant regulatory reform of the United States healthcare system since the passage of Medicare and Medicaid in 1965 The law was designed to expand insurance coverage and reduce the costs of health care Some elements of the law such are banning insurance companies from denying coverage to people with pre existing conditions are popular while other provisions such as the individual mandate are unpopular Opinions on the law vary with some wanting to keep the law as it it others favor fixing the law and son favor repealing the law in its entirity The middle position has been gaining traction recently and in a Rasmussen Reports poll conducted January 5 2017 567 out of 1013 randomly selected likely voters wa Congress and the President to fix the law a piece at a time JIS AFFORDABLE CARE ACT a Find the point estimate for the proportion of Americans who want Congress and the President to the law a piece at a time Round your answer to 4 decimal places b Find the margin of error for a 95 confidence interval ound your answer to 4 decimal places

In a survey funded by the University of Washington School of Medicine 507 of 1 300 adult Seattle residents said they did not believe they could come down with a sexually transmitted infection STI Construct a 99 confidence interval estimating the proportion of adult Seattle residents that do not believe they can contract an STI Round the answers to three decimal places Preliminary a Is it safe to assume that n 5 of all residents in Seattle Yes O No b Verify np 1 P 10 Round your answer to one decimal place np 1 P

A political candidate has asked his her assistant to conduct a poll to determine the percentage of people in the community that supports him her If the candidate wants a 10 margin of error at a 90 confidence level what size of sample is needed Be sure to round accordingly The candidate would need to survey margin of error at a 90 confidence level people in the community in order to be within a 10

Translate the following scenario into an algebraic equation and then solve Use j for your variable to represent journals Jamie bought a total of 7 textbooks at the bookstore She bought four more textbooks than journals Ho many journals did she buy Equation i

Write 2 002 10 9 in standard notation

x 9 10 9 8 7 6 54 3 2 1 0 1 2 3 4 5 6 7 8 9

Rewrite this number in appropriate scientific notation 0 000000354 answer

Enter or in the box below 4 8

z 6 6

Enter or in the box below 8 7

The lengths of a professor s classes has a continuous uniform distribution between 50 0 min and 52 0 min If one such class is randomly selected find the probability that the class length is more than 51 4 min P X 51 4 Raport answer accurate to 2 decimal places

Solve the equation 5x 9 8 algebraically Answer as a reduced fraction only x Solve the equation x 8 6x 9 algebraically Answer as a reduced fraction only x Solve the equation 2 12x 8 1 8 x 5 1 algebraically Answer as a reduced fraction onl 1

Solve Write your answer in interval notation 2x 8 9 If no solutions exists enter No solutions od fractions in your answer no decimals

Simplify 28 68 2

Solve the inequality x 6 O No solution 0 6 x 6 0 x 6 Ox 6 or x 6

Solve the absolute value equation or indicate that the equation has no solution with 2x 2 24

The expression 3 3 6x 4 x 7 equals Ax B where A equals and B equals

Simplify 3 5 63 9

Simplify 3 x 2 10x 10x 2 1 2

Solve the equation algebraically Answer as a reduced fraction only 9 11x 2 1 3 9 x 8

Construct a Binomial probability distrubtion table using n 5 and p 0 36 Next record the mean and standard deviation of the distribution below Where necessary round all numbers to four decimal places P x fl

Score 4 5 Penalty none Question Answer A survey was given to a random sample of the residents of a town to determine whether they support a new plan to raise taxes in order to increase education spending The percentage of people who said they favored the plan was 49 The margin of error for th survey was 4 Which of the following is not a reasonable value for the actual percentage of the residents that support the tax plan O 52 3 45 8 Watch Video O 45 8 O 53 7 Show Examples Submit Answer

Score 3 5 Penalty none Question Answer Attempt 1 out of 2 Watch Video Given the function g x 2 5x 9 determine the average rate of change of the function over the interval 8 1 Submit Answer Show Examples 0

Complete the following probability distribution table X 24 6 79 87 P X 0 23 0 3 0 18

Find the expected value for the random variable 3 3 7 9 14 P X x 0 19 0 2 0 14 0 24 0 23 X 03 17 O 5 41 06 39 O 4 23 O 5 79 O 6 96

Find Average Rate of Change from Equation Score 2 5 Penalty none Question O Watch Video Show Examples Given the function g x x 2x 9 determine the average rate of change of the function over the interval 0 6

Score 3 5 Penalty none Question A study was commissioned to find the mean weight of the residents in certain town The study found the mean weight to be 187 pounds with a margin of error of 5 pounds Which of the following is not a reasonable value for the true mean weight of the residents of the town Answer Watch Video Show Examples

36 of women consider a fan of professional baseball Complete parts a through d below a Find the mean of the binomial distribution Round to the nearest tenth as needed b Find the variance of the binomial distribution 0 Round to the nearest tenth as needed c Find the standard deviation of the binomial distribution Round to the nearest tenth as needed d Interpret the results in the context of the real life situation 0 On average out of 6 women would consider themselves baseball fans The standard deviation is women so in most samples of 6 women the number of women who consider themselves baseball fans would differ from the mean by ne more than Type integers or decimals rounded to the nearest tenth as needed

Careers G google translate G Member Login US 4 YouTube to Mp3 C 3 CCBubble Knee Len Question 10 8 6 The function y f x is graphed below What is the average rate of change of the function f x on the interval 8 9 4 2 100 80 60 40 20 20 40 60 80 100 2 4 6 Watch Video 10 All Book Show Examples

Question Watch Video Answer Attempt 1 out of 2 Show Exam What is the intermediate step in the form x a b as a result of completing the square for the following equation 3x 9x 357 91

Question Which expression is equivalent to 5 4 5 Answer 5 1 520 5 9 516

Question Jeremiah kicks a football The graph below shows the height of the football h in feet after t seconds Height in feet Answer Attempt 1 out of 2 35 30 2 20 15 10 s 0 0 5 1 1 4 31 36 1 5 2 8 0 2 25 3 35 Time in seconds 4 4 5 5 O Watch Video 55

Question Write the expression in radical form Answer Attempt 1 out of 2 83 WIA

Question Write the expression in exponential form Answer Age 1 out of 2 F

Question Which expression is equivalent to Answer 03 8 O 3 12 34 03 20 3 16

Score 1 5 Penalty none Watch Video Answer Attempt 1 out of 2 Show Examples Question A survey was given to a random sample of the residents of a town to determine whether they support a new plan to raise taxes in order to increase education spending The percentage of people who said the supported the plan to raise taxes was 56 The margin of error for the survey was 2 Write a confidence interval for the percentage of the population that favors the plan GEEFT

9 38 of women consider themselves fans of professional baseball You randomly select six women and ask each if she considers herself fan of professional baseball Complete parts a through c below a Construct a binomial distribution using n 6 and p 0 38 P x O A 6 Round to the nearest thousandth as needed b Graph the binomial distribution using a histogram and describe its shape Choose the correct graph below 0 AP x mo X 0 15 0 1 0 05 0 1 2 3 4 5 0246 OA Skewed right B Skewed left OC Symmetrical OD None of these Q G 1 O equal to less than greater than O B AP x 0 35 IL 0246 Q Q O C 0 35 04 Describe the shape of the histogram Choose the correct answer below AP x 0 3 0 25 0 2 0 15 0 1 0 05 02 Q 57 c What values of the random variables would you consider unusual Explain your reasoning On average women The values x 6 and x Round to the nearest tenth as needed O D 0 AP x 0 05 out of 6 women would consider themselves baseball fans with a standard deviation of would be unusual because their probabilities are 1 46 0 05 Q Q

Score 0 5 Penalty none Question 5 5 Arianna throws a ball up in the air The graph below shows the height of the ball h in meters after t seconds How many seconds have gone by when the ball is at its highest point Height in meters No Co Et O Watch Video 1 4 9 Show Examples A

you are not good at mathematics then you will have a problem learning physics A Write the statement in symbolic form B Construct a truth table for the symbolic statement in part A C Use the truth table to indicate one set of conditions that make the compound statement false or state th no such conditions exist A OA p q pq B p q v p q B TTF TI Write the statement in symbolic form Let p you are good at mathematics and q you will have a problem learning physics p q C p q pq D p q v p q O Construct a truth table for the symbolic statement in part A T F p q F F F T T L T F T FT p q F T T T p q pq p q T T T F F T T F C What are the conditions that make the compound statement false OA The statement is false when p and q ave opposite truth values OB No such conditions exist to make the statement false C The statement is false when p and q have the same truth values

Question Answer A survey was given to a random sample of voters in the United States to ask about their preference for a presidential candidate The percentage of people who said they preferred Candidate A was 28 The margin of error for the survey was 2 Which of the following is not a reasonable value for the actual percentage of the population that prefers Candidate A 26 4 O 30 8 Watch Video O 29 7 O 26 7 Show Examples Submit Answer

Question O Watch Video Statistics Calculator Show Examples The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1000 hours and a standard deviation of 20 hours What is the probability that a randomly chosen light bulb will last less than 960 hours to the nearest thousandth

Question O Watch Video Answer Attempt 1 out o Show Examples When Corey goes bowling his scores are normally distributed with a mean of 100 and a standard deviation of 10 Using the empirical rule what percentage of the games that Corey bowls does he score between 90 and 110

Question Penalty none 10 The function y f x is graphed below What is the average rate of change of the function f x on the interval 2 x 4 8 6 4 16 12 O Watch Video 10 Show Examples

Question Answer Attempt 1 out of 21 O Watch Video If using the method of completing the square to solve the quadratic equation 2 20x 33 0 which number would have to added to complete the square Submut Answer Show Examples

If you are good at mathematics then you won t have a problem learning physics and if you are not good at mathematics then you will have a problem learning physics A A Write the statement in symbolic form B Construct a truth table for the symbolic statement in part A C Use the truth table to indicate one set of conditions that make the compound statement false or state tha no such conditions exist Write the statement in symbolic form Let p you are good at mathematics and q you will have a problem learning physics A p q p q B pq v p q OC p q p q