Based on these results, can the statistician conclude that people prefer the Mum brand of bottled water over the Fresh? Test at 5% significance level with appropriate null and alternative hypotheses mentioning all six necessary steps.

A survey of 61,646 people included several questions about office relationships. Of the respondents, 26.2% reported that bosses scream at employees. Use a 0.01 significance level to test the claim that more than 1/4 of people say that bosses scream at employees. How is the conclusion affected after learning that the survey is an online survey in which Internet users chose whether to respond? ldentify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hvnothesis, and final conclusion that addresses the original claim, Use the P-value method. Use the normal distribution as an annroximation of the binomial distribution. Hip>0.75 H;: p 0.75 The test statistic is z= (Round to two decimal places as needed.)

A random sample of 859 births included 435 boys. Use a 0.01 significance level to test the claim that 51.3​% of newborn babies are boys. Do the results support the belief that 51.3​% of newborn babies are​ boys? test statistic_____ pvalue_____

Consider a drug that is used to help prevent blood clots in certain patients. In clinical trials, among 5897 patients treated with this drug, 165 developed the adverse reaction of nausea. Use a 0.10 significance level to test the claim that 3% of users developed nausea. Does nausea appear to be problematic adverse reaction? Identify the null and alternative hypotheses, test statistics, P-value and state the final conclusion that addresses the original claim.

In a recent court case it was found that during a period of 11 years 852 people were selected for grand jury duty and 36​% of them were from the same ethnicity. Among the people eligible for grand jury​duty, 78.9​% were of this ethnicity. Use a 0.05 significance level to test the claim that the selection process is biased against allowing this ethnicity to sit on the grand jury. Identify the null​ hypothesis, alternative​ hypothesis, test​ statistic, P-value, conclusion about the null​ hypothesis, and final conclusion that addresses the original claim. Use the​ P-value method and the normal distribution as an approximation to the binomial distribution.

In a recent court case it was found that during a period of 11 years 868 people were selected for grand jury duty and 42​% of them were from the same ethnicity. Among the people eligible for grand jury​ duty, 80.8​% were of this ethnicity. Use a 0.05 significance level to test the claim that the selection process is biased against allowing this ethnicity to sit on the grand jury. Identify the null​ hypothesis, alternative​ hypothesis, test​ statistic, P-value, conclusion about the null​ hypothesis, and final conclusion that addresses the original claim. Use the​ P-value method and the normal distribution as an approximation to the binomial distribution. Which of the following is the hypothesis test to be​ conducted? What is the test​ statistic? What is the​ P-value? What is the conclusion on the null​ hypothesis?   Does the jury selection system appear to be​ fair?

In a study of the accuracy of fast food​ drive-through orders, one restaurant had 36 orders that were not accurate among 338 orders observed. Use a 0.01 significance level to test the claim that the rate of inaccurate orders is equal to​ 10%. Does the accuracy rate appear to be​ acceptable? The test statistic for this hypothesis test is The​ P-value for this hypothesis test is

An airline company is interested in improving customer satisfaction rate from the 57% currently claimed. The company sponsored a survey of 244 customers and found that 154 customers were satisfied. Determine whether sufficient evidence exists that the customer satisfaction rate is higher than the claim by the company.     What is the test statistic z? What is the p-value? Does sufficient evidence exist that the customer satisfaction rate is different than the claim by the company at a significance level of �=0.1?

In a recent court case it was found that during a period of 11 years 883 people were selected for grand jury duty and 43​% of them were from the same ethnicity. Among the people eligible for grand jury​ duty, 79.4​% were of this ethnicity. Use a 0.01 significance level to test the claim that the selection process is biased against allowing this ethnicity to sit on the grand jury. Identify the null​ hypothesis, alternative​ hypothesis, test​ statistic, P-value, conclusion about the null​ hypothesis, and final conclusion that addresses the original claim. Use the​ P-value method and the normal distribution as an approximation to the binomial distribution. What  is the hypothesis test to be​ conducted?

In a recent court case it was found that during a period of 11 years 870 people were selected for grand jury duty and 37​% of them were from the same ethnicity. Among the people eligible for grand jury​ duty, 79.6​% were of this ethnicity. Use a 0.05 significance level to test the claim that the selection process is biased against allowing this ethnicity to sit on the grand jury. Identify the null​ hypothesis, alternative​ hypothesis, test​ statistic, P-value, conclusion about the null​ hypothesis, and final conclusion that addresses the original claim. Use the​ P-value method and the normal distribution as an approximation to the binomial distribution. a. What is the test​ statistic? z equals ​(Round to two decimal places as​ needed.)   b. What is the​ P-value? ​P-value equals ​(Round to four decimal places as​ needed.)