# Question

For this data set, find the mean and standard deviation of the variable. The data represent the serum cholesterol levels of 30 individuals. Count the number of data values that fall within 2 standard deviations of the mean. Compare this with the number obtained from Chebyshev’s theorem. Comment on the answer.

## Answer to relevant Questions

For this data set, find the mean and standard deviation of the variable. The data represent the ages of 30 customers who ordered a product advertised on television. Count the number of data values that fall within 2 standard ...All values of a data set must be within s√ n – 1of the mean. If a person collected 25 data values that had a mean of 50 and a standard deviation of 3 and you saw that one data value was 67, what would you conclude? The average teacher’s salary in a particular state is $54,166. If the standard deviation is $10,200, find the salaries corresponding to the following z scores. a. 2 b. – 1 c. 0 d. 2.5 e. –1.6 The airborne speeds in miles per hour of 21 planes are shown. Find the approximate values that correspond to the given percentiles by constructing a percentile graph. Class Frequency 366–386.....4 387–407 ...Using the procedure shown in Example 3–37, check each data set for outliers. a. 16, 18, 22, 19, 3, 21, 17, 20 b. 24, 32, 54, 31, 16, 18, 19, 14, 17, 20 c. 321, 343, 350, 327, 200 d. 88, 72, 97, 84, 86, 85, 100 e. 145, ...Post your question

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