2. Use technology or a z-distribution table to find the indicated area. The scores for a bowling tournament are normally distributed with a mean of 240 and a standard deviation of 100. Julian scored 240 at the tournament. What percent of bowlers scored less than Julian?

A. 10

B. 25

C. 50

D. 75

3. Use technology or a z-distribution table to find the indicated area. The odometer readings on a random sample of identical model sports cars are normally distributed with a mean of 120,000 miles and a standard deviation of 30,000 miles. Consider a group of 6000 sports cars. Approximately how many sports cars will have less than 150,000 miles on the odometer?

A. 300

B. 951

C. 5048

D. 5700

Question

Mathematics

Mills

9 June, 21:03

2. Use technology or a z-distribution table to find the indicated area. The scores for a bowling tournament are normally distributed with a mean of 240 and a standard deviation of 100. Julian scored 240 at the tournament. What percent of bowlers scored less than Julian?

A. 10

B. 25

C. 50

D. 75

3. Use technology or a z-distribution table to find the indicated area. The odometer readings on a random sample of identical model sports cars are normally distributed with a mean of 120,000 miles and a standard deviation of 30,000 miles. Consider a group of 6000 sports cars. Approximately how many sports cars will have less than 150,000 miles on the odometer?

A. 300

B. 951

C. 5048

D. 5700

+2

Answers (1)

Know the Answer?

Baylee Mcbride · Answer 1

2. Julian scored 240 and a mean is also 240. Therefore he scored better than 1/2 of bowlers.

Answer: C) 50%

3. Mean = 120,000 miles

Standard deviation = 30,000 miles

150,000 miles = Mean + 1 standard deviation

From table for the Normal Distribution:

F (z = 1) = 0.84134

6,000 * 0.84134 = 5,048.04 ≈ 5,048

Answer: C) 5,048