Terri Vogel, an amateur motorcycle racer, averages 129.71 seconds per 2.5 mile lap (in a seven-lap race) with a standard deviation of 2.28 seconds. The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps. A) Find the percent of her laps that are completed in less than 130 seconds B) The fastest 4% of her laps are under how many seconds? C) The middle 80% of her lap times are from _____seconds to

An insurance company crashed four cars in succession at 5 miles per hour. The cost of repair for each of the four crashes was $419, $458, $403, $212 a. Compute the range, sample variance, and sample standard deviation cost of repair. The range is $. s2 =O dollars? (Round to the nearest whole number as needed.) s= S (Round to two decimal places as needed.)

The salaries of 1200 pro athletes form a normal distribution with a mean of $79,000 and a standard deviation of $30,000. A "superstar" is defined as anybody in the top 2% of the salary distribution. What is the minimum salary of a superstar? Select one: a. $85,150 b. $140,500 c. $209,000 O d. $109,000

What type of distribution is this : you measure the GPA of every student in a high school to the nearest thousandth?

Which of the following data sets has the smallest standard deviation?   a. 1, 2, 3, 4, 5   b. 100, 100, 100, 100, 100   c. 100, 101, 102, 103, 104   d. 2, 4, 6, 8, 10

A truck is loaded with cartons of eggs that weigh an average of 1.8 pounds each with a standard deviation of 0.2 pound. A histogram of these weights appears mound-shaped and symmetric. What proportion of the cartons weigh less than 1.4 pounds? Select one: a. 5% b. 2.5% C. 95% d. 68%

Over the first five years of owning her car, Gina drove about 12,700 miles the first year, 15,478 miles the second year, 12,675 the third year, 11,850 the fourth year, and 13,075 the fifth year. a. Find the mean, median, and mode of this data. b. Explain which measure of central tendency will best predict how many miles Gina will drive in the sixth year. a. mean= 12,700; median= 13,156; no mode; the mean is the best choice because it is representative of the entire data set. b. mean= 13,156; median= 12,700; mode= 3,628; the median is the best choice because it is not skewed by the high outlier. c. mean= 13,156; median= 12,700; no mode; the mean is the best choice because it is representative of the entire data set. d. mean= 13,156; median= 12,700; no mode; the median is the best choice because it is not skewed by the high outlier.

An insurance company crashed four cars in succession at 5 miles per hour. The cost of repair for each of the four crashes was $421, $460, $409, $228. Compute the range, sample variance, and sample standard deviation cost of repair. The range is $ $²=dollars² (Round to the nearest whole number as needed.) $=$ (Round to two decimal places as needed.)

A developmental psychologist is interested in studying how long babies gaze at a photograph of a human face. To test this question, she shows a picture to a sample of six babies and records the length of their gaze in seconds. The data are as follows: 12, 17, 18, 20, 20, 29. Calculate the mean, median, mode, range, variance and standard deviation for the sample.

Find the number of women.