A publisher reports that 40%40% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 200200 found that 31%31% of the readers owned a particular make of car. State the null and alternative hypotheses.

Q: Which of the following describes a Type Il error for the hypotheses?

A: The type II error is defined as accepting the null hypothesis when the alternative is true.

Q: A reader wrote in to the “Ask Marilyn” column in Parade magazine to say that his grandfather told…

A: As per guidelines we will only answer first three subparts, please repost other subparts for more…

Q: . Restate the grandfather’s assertion as the null hypothesis, in symbols and in words. 2. Given…

A: Given, n=95 X=47

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: What are the null and alternative​ hypotheses

A: Since , claim is that the manager has believed the wait time was 3 minutes. Our aim is to find the…

Q: Suppose a recent survey found that 74% of dog owners say their pet appears cheerful, while only 59%…

A: Given, p^1=0.74p^2=0.59

Q: In a sample of 49 men, 38 said that they had less leisure time today than they had 10 years ago. In…

A: The claim is that there is a difference in the proportions.

Q: Which of the following hypotheses will require a two-tailed test? Women are more concerned with the…

A: Sol:- Two tailed test Hypothesis can be modeled as :-H0: μ = μ0Ha: μ ≠ μ0 Correct choice :-

Q: A advertising company claims that it receives 15 % responses from its mailing. To test this claim,…

A: From the provided information, Sample size (n) = 200 From which 40 responses. Sample proportion (p̂)…

Q: The mean repair bill of cars is greater than $110. A) Write the null and alternative hypotheses. B)…

A: In this question, we have a given statement, using that statement we have to find the null and…

Q: A certain university has decided to introduce the use of plus and minus with letter grades, as long…

A: Given info: A certain university has decided to introduce the use of plus and minus with letter…

Q: To be considered 18-karat (18K) gold, a piece of jewelry must be made of 75% pure gold. The higher…

A: It is needed to define the type I error.

Q: A statistical test involves the following null and alternative hypotheses.

A: Type I Error: The type I error represents that rejecting the null hypothesis when the null…

Q: A newsletter publisher believes that 38% of their readers own a Rolls Royce. A testing firm believes…

A: Given that, a newsletter publisher believes that 38% of their readers own a Rolls Royce. A testing…

Q: Refer to the figure at the right. At a = 0.05, can you support the claim that the proportion of…

A: Let p1 be the population proportion of women ages 18 to 24 living in parents' home in 1999, and p2…

Q: A hospital director is told that 32%of the emergency room visitors are uninsured. The director wants…

A:

Q: The Congressional Budget Office reports that 36% of federal civilian employees have a bachelor's…

A: Note : Thank you for posting the question! Since your question has more than 3 parts, we have solved…

Q: Refer to the figure at the right. At a=0.10, can you support the claim that the proportion of men…

A: From the provided information,

Q: A state-by-state survey found that the proportions of adults who are smokers in state A and state B…

A: The following information is provided. Number of respondent from each state is 3000. n1=n2=3000 The…

Q: A newsletter publisher believes that over 68%68% of their readers own a personal computer.  Is there…

A: Null hypothesis: Alternative hypothesis:

Q: In a recent survey, it was stated that Americans watch television on average four hours per day.…

A: It is provided that the sample mean is 40. As the average time of watching television can never be…

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A:

Q: Listed below are the heights (in inches) of fathers and their first sons. The data are from a…

A: We have given paired sampled data, calculation for sample mean and standard deviation is show below.…

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: A book club wonders if fewer than 40 percent of students at a local university had read at least one…

A: Test hypothesis: Denote the population proportion of students at a local university who had read at…

Q: In 1995, it was determined that 78% of US citizens supported a ban on household aerosols.  Thinking…

A: Null and alternative hypotheses: The hypothesis which is tentatively fixed up under and tested for…

Q: A newsletter publisher believes that under 48%48% of their readers own a personal computer.  Is…

A: Solution: Let p be the proportion of the readers own a personal computer. From the given…

Q: rarely eat three meals a day. Usually Eat 3 Meals a Day| 3 Meals a Day Rarely Eat Male 25 22 Female…

A: The observed values table is   Usually Rarely Row totals Male 25 22 r1=47 Female 37 52 r2=89…

Q: A newsletter publisher believes that 67 % of their readers own a personal computer. Is there…

A: Here we need to state the null and alternative hypothesis for the given situation.

Q: A newsletter publisher believes that over 54% of their readers own a personal computer. Is there…

A: The null hypothesis and the alternative hypothesis are given below:

Q: A company that produces snack foods uses a machine to package 454g bags of pretzels.  The hypotheses…

A:

Q: A researcher thinks that the mean starting salary for San Jose State University graduates is under…

A: Claim: The mean starting salary for San Jose State University graduates is under $100,000 per year…

Q: USA Today reported that about 47% of the general consumer population in the United States is loyal…

A: We have given that the hypothetical proportion p0=0.47, sample size 1002 and favourable cases X =…

Q: Recently, a large academic medical center determined that 13 of 22 employees in a particular…

A:

Q: In a fishing lodge brochure, the lodge advertises that 75% of its guests catch northern plke over 20…

A: a) Denote p as the true proportion of guests who catch pike over 20 pounds.

Q: USA Today reported that about 47% of the general consumer population in the United States is loyal…

A: Given that  Population proportion p=0.47 Sample size n=1008 Let X denotes the number of Chevrolet…

Q: Previously, an organization reported that teenagers spend 4.5 hours per week, on average, on the…

A: Solution-: Given: n=15,μ=4.5,x¯=4.75,s=2.0 (a) We identify hypothesis (b) Conduct the hypothesis…

Q: The largest group of moviegoers by age is the 40- to 59-year-old age group. This group constitutes…

A: The random variable X follows normal distribution. We have to test whether the population proportion…

Q: A publisher reports that 44% of their readers own a particular make of car. A marketing executive…

A: From the provided information, A publisher reports that 44% of their readers own a particular make…

Q: A publisher reports that 52 % of their readers own a laptop. A marketing executive wants to test the…

A: Solution : Given that, Population Proportion p0 = 0.52 Sample Size n = 350 Sample Proportion p^=0.46…

Q: A local police chief claims that about 22% of all drug related arrests are ever prosecuted. A sample…

A: The known values are, The null and alternative hypothesis is, Level of significance, The value of…

Q: A business journal investigation of the performance and timing of corporate acquisitions discovered…

A:

Q: The owner of a professional basketball team claims that the mean attendance at games is over 17,000…

A: In this case, the owner of a professional basket ball team claims that the mean attendance at a game…

Q: A newsletter publisher believes that over 20 % of their readers own a Rolls Royce. For marketing…

A: In this case, a test is required to see whether over (more) than 20% of the reader owns a Rolls…

Q: The p-value was reported to be small, so we would reject the null hypothesis at a 5% level and…

A: A random sample of 80 junior hockey league players in 2018 was taken. The NHL claims that there is…

Q: The U.S. Postal Service (USPS) is faced with the issue of a large portion of mail (letters and…

A: The random variable X follows binomial distribution. X ~ B (n, p) The population proportion is 0.06.…

Q: an airline promotion to business travelers is based on the assumption that two-thirds ofbusiness…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: A business journal investigation of the performance and timing of corporate acquisitions discovered…

A: Solution: Let X be number of firms announced one or more acquisitions during the year 2000 and n be…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.