major videocassette rental chain is considering opening a new store in an area that currently does not have any such stores. The chain will open if there is evidence that more than 5,000 of the 20,000 household in the area are equipped with videocassette recorders (VCRs). It conducts a telephone poll of 300 randomly selected household in the area and finds that 96 have VCRs. The decision on the hypothesis test using a 3% level of significance is _____________.    a. to fail to H0 in favour of H1.   b. to reject H0 in favour of H1.   c. to accept H0 in favour of H1.   d. We cannot tell what her deci

Q: It is believed that 11% of all Americans are left-handed. A college needs to know the number of…

A: The objective of this question is to identify the random variable, population parameter, and…

Q: A random sample of 860 births in New york state included 434 girls. Use a 0.05 significance level to…

A: The aim is to test the claim that 48.8% of newborn babies are girls. The test hypotheses are given…

Q: In a survey conducted by a website, employers were asked if they had ever sent an employee home…

A: From given data we have : n=2769 x=978 The claim is more than one-third of employers have sent and…

Q: One study claimed that 86% of college students identify themselves as procrastinators. A professor…

A:

Q: The percentage of physicians who are women is 32.4%.  In a survey of physicians employed by a large…

A: This problem can be solved by using test of significance for single proportion. In usual notations,…

Q: According to the 2018 General Social Survey (GSS), 60% of all U.S. households have at least one pet.…

A: Here one proportion Z - test stats is applicable

Q: 10 years ago, a Gallop Poll reported that 79% of people reported that they enjoy driving their car.…

A: Given: Population proportionp=0.79Number of trials(n)=1048Number of successes (x)=734

Q: A random sample of 855 births included 434 boys. Use a 0.01 significance level to test the claim…

A: Given Data: p^=xn=434855 n=855   Null and Alternate Hypothesis: H0: p=0.505 H1: p≠0.505

Q: In a survey conducted by a website, employers were asked if they had ever sent an employee home…

A: Sample size, n=2765 Number of successes, x=964

Q: cording to a survey, the average American person is in a car for 5 hours per week. To test if the…

A:

Q: Christine, a researcher in psychology and biobehavioral health, believes that city residents and…

A: That is, there is no evidence to conclude that there is difference between the two proportions.…

Q: A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2876…

A: n1 =  Sample of people not wearing seat belt = 2876 X1 = Number of deaths in a sample of people not…

Q: In a random sample of soldiers who fought in the Battle of Preston, 774 soldiers were from the New…

A: The hypotheses are given below: Null hypothesis: H0:p=0.25 Alternative hypothesis: H1:p>0.25 The…

Q: Use Excel to test whether the true proportion of complaints submitted on a Monday is different from…

A: It is given that  Population proportion, p = 20% = 0.20 Favourable cases, X = 13 Sample size, n = 50

Q: Researchers wish to test whether marijuana use among full-time college students aged 19-22 at a…

A: 1) The appropriate Null and Alternative Hypotheses are given below: From the given information, the…

Q: A large counseling center needs to evaluate their experimental program designed for divorce…

A: Null Hypothesis: H0: Special program and regular program are equally effective. Alternative…

Q: A CEO wondered if her company received either more or less complaints from its workers on Monday…

A: Answer: From the given data, Population proportion (P) = 20%                                       =…

Q: improvement, two economists predicted no change, and four economists predicted a decline in the…

A: Here use one proportion z test

Q: A researcher claims that the percentage of voters that favor voting via absentee ballot is 35%.…

A: It is given that the researcher claims that the percentage of voters that favor voting via absentee…

Q: A CEO wondered if her company received either more or less complaints from its workers on Monday…

A: Given information: The specified population proportion is p=0.2. The sample size is n=50. The number…

Q: A survey of 225 randomly chosen commuters are asked if they support an expanded public…

A:

Q: Suppose 243 subjects are treated with a drug that is used to treat pain and 50 of them developed…

A: Given, The number of subjects treated with a drug that is used to treat pain is n=243 The number of…

Q: A regional survey of 561 companies asked the vice president of operations how satisfied he or she was…

A:

Q: It is believed that 11% of all Americans are left-handed. A college needs to know how many…

A: Given that  Sample size n =200 Favorable cases x =30 Sample proportion p^=x/n  =30/200 =0.15

Q: Christine, a researcher in psychology and biobehavioral health, believes that city residents and…

A: From the provided information, n1=109x1=59n2=108x2=72α=0.1

Q: USA Today (Feb. 17, 2011) described a survey of 1,008 American adults. One question on the survey…

A: a) The sample proportion is p-cap = 205/1008           = 0.203 b) The population proportion p is…

Q: A survey of 800 randomly selected adults in a certain country found that 82% believed that…

A: sample size(n)=800sample proportion()=0.82Confidence level=95%

Q: An ABC News poll asked adults whether they felt genetically modified food was safe to eat. 35% felt…

A: The objective of this question is to determine whether there is a significant difference between the…