A publisher reports that 79% of their readers own a personal computer. A marketing executive wants to test the claim that the percentage is actually more than the reported percentage. A random sample of 100 found that 89% of the readers owned a personal computer. Is there sufficient evidence at the 0.02 level to support the executive’s claim? State the null and the alternative hypotheses, and p-value to support of your decision.

Q: Write the statistical hypotheses.

A: The information provided in the question are as follows : The researcher wants to test whether there…

Q: You are a research assistant at a zoo.  The question of your study is "Has the proportion of baby…

A: Solution

Q: Mathcorp has 35,000 employees and claims that over 90% of its employees are satisfied with their…

A: From the provided information, level of significance (α) = 0.05 Sample size (n) = 890 Number of…

Q: Twenty years ago, 47% of parents of children in high school felt it was a serious problem that high…

A: Given that 47% of parents of children in high school felt it was a serious problem that high school…

Q: A manager decided that if more than 80% of users are classified as potential buyers, they will…

A: Given that, Percentage of users who are potential users (p) = 80% = 0.80 Explain how would work the…

Q: The Department of Transportation reports that out of all fatal crashes, 6% of the drivers were…

A: Given,n=345x=25p^=xnp^=25345=0.0725α=0.05

Q: college students average about 7 hours of sleep per night. You believe this number is incorrect and…

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

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

A: Note : According to our guidelines we are solving only first three sub-parts of a question and the…

Q: Using a 5% level of significance, test the hypothesis that more than 3% of their electric vehicles…

A: Here From given informationClaim : An electric automobile manufacturer states that 3% or less of its…

Q: State the conclusion for the test. O A. Fail to reject Ho. There is not sufficient evidence to…

A: A study was done on protoctored and nonproctored tests.

Q: Test the claim that the proportion of people who own cats is smaller than 60% at the 0.025…

A:

Q: You are a research assistant at a zoo.  The question of your study is "Has the proportion of baby…

A: The obtained z-score is 1.89.

Q: A well-known brokerage firm executive claimed that at least 90% of investors are currently confident…

A: In order to determine whether the population proportion of investors who are confident of meeting…

Q: Explain how to conclude when you would reject the null hypothesis based on a p-value. Give a numeric…

A: We know that when p-value is less than the significance level than reject the null hypothesis and…

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A:

Q: (b) What is the test statistic? (Round your answer to 3 decimal places, if needed.) (c) Using the…

A: Followings are the Explanation of the question Use the two-sample independent t test assuming the…

Q: One personality test available on the World Wide Web has a subsection designed to assess the…

A: We have given that Mean(µ) = 140 Sample mean (x̅) = 134 Standard deviations (s) = 28

Q: ell-known brokerage firm executive claimed that at least 90% of investors are currently confident of…

A: The provided information is: Sample sizen=800 Sample proportionp^=0.88 Hypothesized…

Q: Thumbs-up is a popular and new soft drink company in India.  The company wants to test the market…

A: The known values are The sample proportion is, Null and alternative hypothesis: Significance…

Q: You are a research assistant at a zoo. The question of your study is "Has the proportion of baby…

A: You are a research assistant at a zoo.  The question of your study is "Has the proportion of…

Q: What is the result of the hypothesis test? the null hypothesis because the P-value is Reject Do not…

A: Given information:

Q: Do the results support the belief that 50.9​% of newborn babies are​ boys?

A: Given : n=864 , X=433 , p0=0.509 , α=0.05 The estimate of the sample proportion is ,…

Q: State the null and alternative hypotheses. Report the test statistic and the p value. a. b. State…

A: Given that, a breakdown of 678 civil cases e originally tried in front of a judge and appealed by…

Q: Suppose you would like to test whether there is a difference in the satisfaction level (satisfied,…

A: Provided data is, test is performed to check whether there is a difference in the satisfaction level…

Q: Suppose 206 subjects are treated with a drug that is used to treat pain and 50 of them developed…

A: We have given that  Sample size n=206 , favorable cases x=50 Sample proportion p^= x/ n level of…

Q: A well known Maine canoe company claims to be favored by over 60% of white water canoeists. A…

A: The null and the alternative hypotheses are, H0: Maine canoe company is favored by less than or…

Q: Only about 11% of all people can wiggle their ears. Is this percent different for millionaires? Of…

A: As per our guidelines we are supposed to answer only 3 sub-parts of any one question so I am solving…

Q: A CNN/Time poll conducted in the United States October 18-20, 2006, asked, "Do you favor or oppose…

A: Given: n=1771,p^=22.2%=0.2220,MOE=1.33%=0.0133 We find level of confidence were they use?

Q: Suppose you want to test the claim that a population mean equals 38.  State the null hypothesis.

A: Given that, Claim: population mean equals 38.

Q: shopkeeper wonders if number of their female and male customers are equal or not. They count the…

A:

Q: You are a research assistant at a zoo.  The question of your study is "Has the proportion of baby…

A: Given: The Z - score is equal to 0.788 α = 0.05   The objective is to validate the asserted claim…

Q: Question Help v In a study of cell phone usage and brain hemispheric dominance, an Internet survey…

A:

Q: A company which designs sports shoes has made an improvement to their popular running shoe. They…

A: Given that  Claim : The mean time to run 100 meters for sprinters wearing the new running shoe is…

Q: The mean entry-level salary for an employee at a company is $40,000. You believe it is lower for…

A: The mean entry-level salary for an employee at a company is $40,000.You believe it is lower for…

Q: I would like to know is my calculated answer correct

A: Step 1:a. Hypotheses:Null Hypothesis (H0): The percentage of working college students remains the…

Q: Consumers Energy states that the average electric bill across the state is $51.28. You want to test…

A: Given that  Population mean μ =51.28

Q: Explain what a p-value represents. Explain what the significance level for a hypothesis test, a,…

A: Solution-: We want to explain the following (a) What a p-value represents. (b) What the significance…