An online poll asked: "Do you believe the Loch Ness monster exists?" Among 21,816 responses, 63% were "yes." Use a 0.01 significance level to test the claim that most people believe that the Loch Ness monster exists. How is the conclusion affected by the fact that Internet users who saw the question could decide whether to respond? ..... Identify the null and alternative hypotheses for this test. Choose the correct answer below. О А. Но: р> 0.5 H,: p=0.5 О в. Но: р30.5 H1: p#0.5 с. Но: р30.5 H1:p>0.5 O D. Ho: p= 0.5 H1:p<0.5 Identify the test statistic for this hypothesis test.

I AM RESUBMITTING THIS QUESTION. I NEED THE FIRST THREE QUESTIONS ANSWERED.    The average wait time to get seated at a popular restaurant in the city on a Friday night is 8 minutes.  Is the mean wait time less for men who wear a tie? Wait times for 12 randomly selected men who were wearing a tie are shown below. Assume that the distribution of the population is normal. 8, 7, 7, 5, 5, 5, 8, 9, 7, 8, 5, 6 What can be concluded at the the αα = 0.05 level of significance level of significance? For this study, we should use Select an answer t-test for a population mean z-test for a population proportion  The null and alternative hypotheses would be:       H0:H0:  ? p μ  Select an answer < ≠ > =         H1:H1:  ? μ p  Select an answer < > = ≠     The test statistic ? t z  =  (please show your answer to 3 decimal places.) The p-value =  (Please show your answer to 4 decimal places.) The p-value is ? > ≤  αα Based on this, we should Select an answer accept fail to reject…

A sample of 30 students at a local college were given a test consisting of 10 questions about current news events. Thedistribution of the number of correct answers given is recorded in the frequency column of the table. Questions that were notanswered were marked incorrect. The frequency represents how many of the 30 students who took the test got a certain numberof answers correct. For example, three students answered five questions correctly. Determine this mean number of points x, earned on the test. Give your answer precise to one decimal place

Q5. The number of points held by a sample of the NHL's highest scorers for both the Eastem Conference and the Westem Conference is shown below. At 0.01 level of significance, (a) can it be concluded that the mean score of Eastem Conference is higher than Westem Conference based on these data? Use P value method. Eastern Conference 83 60 Western Conference 77 59 75 72 68 69 70 58 37 57 78 68 62 55 61 61 59 66

LSAT The LSAT (a test taken for law school admission)has a mean score of 151 with a standard deviation of9 and a unimodal, symmetric distribution of scores.A test preparation organization teaches small classes of9 students at a time. A larger organization teaches classesof 25 students at a time. Both organizations publish themean scores of all their classes.a) What would you expect the distribution of mean classscores to be for each organization?b) If either organization has a graduating class with amean score of 160, they’ll take out a full-page ad inthe local school paper to advertise. Which organizationis more likely to have that success? Explain.c) Both organizations advertise that if any class has anaverage score below 145, they’ll pay for everyone toretake the LSAT. Which organization is at greater riskto have to pay?

A research team is working on a project to study the time (in seconds) for high school male runners to finisha 400-meter race. Jimmy, a junior researcher in the team, has randomly selected a sample of 25 male runnersfrom a high school and the time (in seconds) for each of them to complete a 400-meter race was recorded.The sample mean running time was 53 seconds. It is assumed that the running time in a 400-meter racefollows a normal distribution with a population standard deviation of 5.5 seconds.(a) Give a point estimate of the population mean running time for a 400-meter race.(b) Calculate the sampling error at 95% confidence level.(c) Construct a 95% confidence interval estimate of the population mean running time for a 400-meter race. (d) If instead of 25, 80 male runners are selected for the study, what is the sampling error at 95% confidencelevel? When the 95% confidence interval is constructed based on a sample with 80 male runners, wouldyou expect the interval will be (I)…

Combined city and highway gas mileage is approximately normally distributed with mean 23.0 mpg and standard deviation 4.9 mpg. A) Assume twenty 2016 model year vehicles are randomly selected. Describe the distribution of the variable x̄. i. Shape (Justify how you know your answer) ii. Mean iii. Standard deviation, rounded to three decimal places. B) Find the probability that the mean gas mileage of a sample of twenty 2016 model year vehicles is less than 24 mpg.

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21. Attitudes toward recycled products Exercise 19 pg 15 gives data on the opinions of people who have and have not bought coffee filters made from recycled paper. To see the relationship between opinion and experience with the product, find the conditional distributions of opinion (the response variable) for buyers and nonbuyers. What do you conclude?

15. Research results suggest that IQ scores for boys Plomin, 2006). A typical study looking at 10-year-old are more variable than IQ scores for girls (Arden & size would be reported in a journal article. children classifies participants by gender and by low. average, or high IQ. Following are representing the research results. Do the data indicate a significant difference between the frequency distri- butions for males and females? Test at the .05 level of significance and describe the difference. hypothetical data 1 IQ Low Average High Вoys 18 42 20 80 Girls 12 54 14 80 n = 160 Int Ava