A claim is made that 10% of college students major in Psychology. You believe that this claimed value is too high, so you set out to conduct a hypothesis test, with the following null and alternative hypotheses, and you decide to conduct this hypothesis test using a significance (or alpha) level of 0.05.  You write out the null and alternative hypotheses as follows:

Q: You are researching a newly developed drug that you believe has better efficacy than the standard…

A: Introduction: The standard drug can effectively relieve symptoms in 70% of affected patients. The…

Q: In a study to test the effectiveness of barbless fishing hooks, 855 fish were caught with this type…

A: Here a from the left tailed hypothesis test for testing the effectiveness of barbless fishing, we…

Q: The janitor calculates a p-value for the hypothesis test of approximately 0.113. Choose the correct…

A: here given p-value = 0.113 and significance level = 0.01 p-value is probability of getting extreme…

Q: a. For this study, we should use Select an answer b. The null and alternative hypotheses would be:…

A: Given : n=53 , X=31 , p0=0.68 , α=0.01 The estimate of the sample proportion is ,…

Q: Marketers believe that 80.59% of adults in the U.S. own a cell phone. A cell phone manufacturer…

A: The question is about hypo. testing Given : Popl. prop. of adults own a cell phone ( p ) = 80.59 % =…

Q: 17% of all college students volunteer their time. Is the percentage of college students who are…

A: The hypothesized population proportion is p0=17%=0.17The number of students who receive the…

Q: According to a University Center for Logistics Management, 9% of all merchandise sold in the United…

A: Let X be the number of items returned.Given, X=10 and n=90Null hypothesis:Alternative hypothesis:

Q: A well-known brokerage firm executive claimed that at least 66 % of investors are currently…

A: given data claim : p ≥ 0.66n = 78x = 45

Q: According to the Centers of Disease Control, about 20% of American young people between the ages of…

A: Given, p^=0.2 According to the Centers of Disease Control, about 20% of American young people…

Q: Last year's mean hourly wage (in dollars) for all hospital clerical workers in a large state was…

A: Given  Population mean μ=8.25

Q: According to the Centers of Disease Control, about 22% of American young people between the ages of…

A: The objective of the question is to identify the correct null and alternative hypotheses for the…

Q: A publisher reports that 30% of their readers own a particular make of car. A marketing executive…

A: solution

Q: In a hypothesis test with a significance level of a = 0.01, we should reject the null hypothesis if…

A: The given is level of significance α=0.01 So, in hypothesis testing, we can reject the null…

Q: The CEO of a large electric utility claims that at least 80 percent of his one million customers are…

A: Assume that p is the true proportion of satisfied customers.

Q: It is well-established in the research that the greater number of people around, the less likely an…

A: Given Information: Claim: the greater number of people around, the less likely an individual is to…

Q: When testing for the difference between the means of two related populations, the usual null…

A: From the provided information, It is testing the difference between the means of two related…

Q: You are conducting a stuldy to significantly different from 53% at a level of significance of a-…

A: a. It can be considered that the sample is collected using a random method.

Q: What are the null and alternative​ hypotheses? A. H0​: BMD is dependent upon depression in elderly…

A: Given: Significance level α = 0.01 Formula Used: Test-statistic χ2 = ∑(O-E)2E

Q: A hospital spokesperson claims that the standard deviation of the waiting times experienced by…

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: 16% of all college students volunteer their time. Is the percentage of college students who are v…

A: The claim is that the % of college students who are volunteers larger for students receiving…

Q: Local city council members want to know whether more than 55% of city residents support a 2% annual…

A: A Type I error occurs when the null hypothesis is rejected when it is actually true.hypothesis

Q: James is a school psychologist who wants to implement stress coping skills to help his students. His…

A: Here the direction of the test is to the left.

Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

A: Note: Thank you for the question. Since multiple subparts are posted, according to our policy, we…

Q: According to the Centers of Disease Control, about 22% of American young people between the ages of…

A: (a) Denote p as the true proportion of obese students between 12 and 19 years of age, in the local…

Q: You are conducting a study to see if the proportion of voters who prefer Candidate A is…

A:

Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

A: a. Test TypeFor this study, we should use a one-sample z-test for proportions.b. HypothesesThe null…

Q: Random samples of students from three dormitories were asked to rate on a scale of 1 (Poor) to 10…

A: (1)   State the hypotheses.

Q: According to a University Center for Logistics Management, 10% of all merchandise sold in the United…

A: Given the hypothesis,H0:p=0.01Ha:p>0.01A Seattle department store sampled 90 items sold in…

Q: According to a University Center for Logistics Management, 11% of all merchandise sold in the United…

A:

Q: In performing a hypothesis T-test, the p-value was 0.00046 and the significance level was 5%.  What…

A: Given,   P-value: 0.00046 Level of significance = 0.05   The objective is to find the conclusion.

Q: A television executive claims that the percent of households that watch the Macy's parade on…

A:

Q: You are conducting a study to see if the proportion of voters who prefer Candidate A is…

A: From the provided information, Sample size (n) = 69 From which 57 potential voters prefer candidate…

Q: larger for students receiving financial aid? Of the 336 randomly selected students who receive…

A:

Q: H0:p=0.41 Ha:p≠0.41 Calculate the test statistic, rounde

A: Let x be the random variable such that the number of people who said they would watch one of the…

Q: In a recent Super Bowl, a TV network predicted that 17 % of the audience would express an interest…

A: Let x be the number of people would watch one of the television shows. Here, x=31 and n=141 people…

Q: Treatment Placebo H₁ H₂ 36 2.61 0.96 In 28 A study was done using a treatment group and a placebo…

A: Given that

Q: An economist claims that the proportion of people who plan to purchase a fully electric vehicle as…

A: The provided information are: Sample size (n) = 750Hypothesised proportion (po)=0.65From the…

Q: Newspaper headlines at the time and traditional wisdom in the succeeding decades have held that…

A:

Q: 13% of all Americans suffer from sleep apnea. A researcher suspects that a different percentage of…

A: Given data number of success , x= 70 sample size, n =390 population proportion,p=…

Q: In a recent poll, 1051 randomly selected adults were asked whether they approve of labor unions; 64%…

A: We have given thatSample size (n) = 1051sample proportion (p̂) = 0.64Significance level (α ) = 0.05

Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

A:

Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

A: The question is about hypo. testing Given : Randomly selected no. of potential voters  ( n ) = 69…

Q: With a = .01, complete step 4 of the hypothesis testing procedure. What decision should the…

A: From the above question The independent variable X is Chocolate eaten during week And The dependent…