The lengths of pregnancies in a small rural village are normally distributed with a mean of 264 days and a standard deviation of 16 days. In what range would you expect to find the middle 50% of most pregnancies? Between        and      . If you were to draw samples of size 40 from this population, in what range would you expect to find the middle 50% of most averages for the lengths of pregnancies in the sample? Between     and       . Enter your answers as numbers. Your answers should be accurate to 1 decimal places

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