4. Jerome's summer reading list has 8 books, and he is examinıng the number of pages in each book After calculating the mean, median, standard deviation, and interquartıle range, he realized that the longest book is actually 100 pages longer than he thought it was Which of his measurements does he need to recalculate? A. The mean, standard deviation, and interquartile range. B. The mean and standard deviation. C. Only the mean

. State the interval estimate that contains more possible values of the population mean (precision) for a 90% CI or a 95% CI for the same data.

for the data shown, answer the questions, round to 2 decimal places, 10.9,12.5,29.8,19.3,19.7,23.3,2.8,29.2,23.5. find the mean, median and the standard deviation.

h.

1. higher or lower 2. Slower or faster

Mario's weekly poker winnings have a mean of $353 and a standard deviation of $67. Last week he won $185. How many standard deviations from the mean is that?

Suppose you have already calculated the mean, the average deviation, and the standard deviation of the weights in pounds of 20 third-graders.  a. if these weights were converted to kilograms and the mean and the average deviation were once again calculated, would the second average deviation be (numerically) less than, greater than, or equal to the first average deviation? Explain your answer. b. If the standard deviation of these weights were calculated in kilograms, would it be (numerically) less than, greater than, or equal to the first standard deviation? Explain your answer

Assume you had the following information regarding three different tests you took: The MATH test mean was 70; the standard deviation was 2; your score is 66. The VERBAL test mean was 60; the standard deviation was 3; your score is 57. The SCIENCE test mean was 80; the standard deviation was 3; your score is 83. On which of the 3 tests did you have your worst performance, relative to other students? A. Math  B. Verbal C. Science

Dianne has a choice of two routes to drive to work. She timed her journey along each route on several occasions and the times in minutes are given below:Town route: 15, 16, 20, 28, 21Country route: 19, 21, 20, 22, 18(i) Calculate the mean and standard deviation (to one d. p.) of each set of journey times.(ii) Which route would you recommend? Give a reason.

Use the following set of values for #10 - 13. Round answers to nearest hundredth, if necessary. .3, .6, 9, 1.3, .4, .6, 1.2, 1.4, 1.1, .2, .2 10. Find the mean, median, and mode(s) 11. Find the range 12. Find the interquartile range 13. Find the standard deviation