For a sample with M= 80, a score of X = 88 corresponds to z = 2.00. What is the sample standard deviation? Question 22 options: 4 8 16

If the mean height of bonsai trees is 52 cm with a standard deviation of 10 cm, what percent of the trees are above 82 cm? Select one: a. 0.3% O b. 82 O c. 3% O d. 0.15% Students at Roseville High School took an IQ test with a mean of 100 and a standard deviation of 15. Approximately, what percent of the students scored above 100? Answer: o represents the

A successful basketball player has a height of 6 feet 11 ​inches, or 211 cm. Based on statistics from a data​ set, his height converts to the z score of 5.17. How many standard deviations is his height above the​ mean?

The speed vehicles traveled on a local highway was recorded for one month.  The speeds ranged from 47 mph to 62 mph with a mean speed of 55 mph and a standard deviation of 6 mph.  The quartiles and median speeds were 50 mph, 59 mph, and 52 mph.  Suppose increased patrols reduced speeds by 7%.  Find the new mean and standard deviation. Express your answer in exact decimals. Choose the best answer below:  A. Mean: 3.85 mph, SD: 0.42 mph B. Mean: 58.85 mph, SD: 6.42 mph C. Mean: 51.15 mph, SD: 6 mph D. Mean: 58.85 mph, SD: 6 mph E. Mean: 51.15 mph, SD: 5.58 mph