We are going to calculate the mean and standard deviation for the following set of sample data by hand. Round all values to 4 decimal places where possible. 10, 3, 5, 6, 11 a) Calculate the mean. (Add all the numbers and divide by 5) b) Fill in the table. 8= 8 SH 10 3 5 6 11 x Standard deviation: Total Σ(x-x)² n-1 Σ (a - x)² means sum c) Calculate the standard deviation.

Ch 8 FRQ ( The distribution of average speeds of the top 53 drivers in NASCAR is roughly symmetric, unimodal, and bell-shaped, with a mean of 184.8 mph and a standard deviation of 7.2 mph. In the space above, draw a Normal Curve, from z=-3 to z=+3. Draw vertical lines at the mean and each whole number standard deviation above and below the mean. Write two rows of numbers under the base line; one row with the number of standard deviations above and below the mean (z-scores), and a row under that with the actual values for this problem. ] What percent of drivers would you expect to have speeds below 199.2 mph ? Show all work. s] What is the area under the curve to the left of a speed of 170.4mph Show all work. What is the probability that a driver selected at random will have a speed below 172.0 mph ? Show all work. B] What percent of drivers would you expect to have a speed above 177.0 mph ? Show all work. How many drivers would you expect to have speeds between 170.4 mph and 177.0 mph…

Here are 11 values from a dataset: 0 0 0 1 2 2 3 4 6 6 6 The sample mean for this dataset is 2.73. Which of the following values is your best guess for the approximate size of the sample standard deviation for these 11 numbers: 1, 2.5, or 5? You may calculate the sample standard deviation for this set of data but it is not required. lp

answer all and asap i will upvote