3. A survey of 10 fast-food restaurants noted the number of calories in a mid-sized hamburger. The results given are: 514, 507, 502, 498, 496, 506, 458, 478, 463, 514. Find the range, variance and standard deviation. Range: Standard Deviation: Variance:

A company conducted a survey to determine the average age of its employees. The ages of 10 randomly selected employees are as follows: 25, 28, 30, 35, 40, 42, 45, 48, 50, and 55. Calculate the sample mean, sample variance, and standard deviation of the ages.

2. 60 matches were played in a football tournament. The table to the right shows the number of goals scored in all matches. Number of Goals 1 3 4 5 Number of Matches 18 20 3 a. Find the median number of goals scored per match. b. Find the mean number of goals scored per match. c. Calculate the standard deviation of the goals scored per match.

Use the following set of numbers (6, 2, 4, 2, 8, 3, 10, 10, 2, 4) to determine the sum of squares  , sample standard deviation  , and population standard deviation  .

What is the variance and standard deviation of the following data: 8, 12, 18, 40, 42, 45, 50, 51, 60, 69, 70

he numbers of regular season wins for 10 football teams in a given season are given below. Determine the range, mean, variance, and standard deviation of the opulation data set. 2,7, 15, 4, 14, 6, 13, 8, 3, 10

Body TemperaturesThe body temperatures (in degrees Fahrenheit) have been recorded for a sample of 130 healthy adults - 65 males and 65 females (Shoemaker, 1996). The sample mean body temperature for males is 98.394 degrees Fahrenheit, and the sample standard deviation for males is 0.743 degrees Fahrenheit. The sample mean body temperature for females is 98.105 degrees Fahrenheit, and the sample standard deviation for females is 0.699 degrees Fahrenheit. a. produce a 95% confidence interval for the population mean body temperature of a healthy male.  Round your answers to three decimal places. (___, ___) b. produce a 95% confidence interval for the population mean body temperature of a healthy female.  Round your answers to three decimal places. (___, ___) d d. Report the half-width of these two intervals.  Round to 3 decimal places. Half width for men:  ____ Half width for women:  ___