Which of the following is false? A. Majority of Z scores in a right skewed distribution are negative. B. In skewed distributions the Z score of the mean might be different than 0. C. For a normal distribution, IQR is less than 2 x SD. D. Z scores are helpful for determining how unusual a data point is compared to the rest of the data in the distribution.

Which of the following is NOT a requirement of testing a claim about the mean of the differences from dependent samples? Choose the correct answer below. O A. The degrees of freedom aren- 2. O B. The samples are simple random samples. O C. The sample data are dependent. O D. Either the number of pairs of sample data is larger than 30 or the pairs have differences that are from a population having a distribution that is approximately normal, or both.

Do men score the same on average compared to women on their statistics finals? Final exam scores of thirteen randomly selected male statistics students and ten randomly selected female statistics students are shown below. Male: 58 95 59 82 76 71 82 91 73 78 87 59 90 Female: 77 68 52 74 59 77 76 68 49 76 Assume both follow a Normal distribution. What can be concluded at the the a = 0.10 level of significance level of significance? ■ | b. The test statistic (t◊) = your answer to 3 decimal places.) c. The p-value = 4 decimal places.) (please show (Please show your answer to

Do students perform worse when they take an exam alone than when they take an exam in a classroom setting? Eight students were given two tests of equal difficulty. They took one test in a solitary room and they took the other in a room filled with other students. The results are shown below. Exam Scores Alone 83 77 76 84 83 76 70 76 Classroom 92 73 77 86 86 81 75 81 Assume a Normal distribution. What can be concluded at the the a = significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: H₁: Select an answer ✓ Select an answer ✓ Select an answer ✓ Select an answer ✓ b. The test statistic ? | = c. The p-value = d. The p-value is ? ✓ a e. Based on this, we should f. Thus, the final conclusion is that ... 0.05 level of significance level of Select an answer (please enter a decimal) Select an answer (Please enter a decimal) (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) Select an answer…

a.What decision can you make? b. What does that decision mean? c. What type of error could you be making, and what would it mean?

a. (True or False) The weekly consumption of favorite beverages from this survey hasapproximately a normal distribution, explain your decision. b. Based on the histogram, which one is greater: mean or median? Explain why.c. Which summary statistic would be a better representation of the center for this sample:mean or median?