Normal Distribution

Normal Distribution

2 years ago

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- Question 1120 secondsQ. In a survey of men in the United States (ages 20-29), the mean height was 69.6 inches with a standard deviation of 3.0 inches. Find the minimum height in the top 22%.answer choices
- Question 2300 secondsQ. The 40 yards sprint times for a soccer team are found to be normally distributed with a mean of 5.2 seconds and a standard deviation of 0.3 seconds. What is the z-score for a player who runs a time of 5.6 seconds?answer choices
- Question 3300 secondsQ. The 40 yards sprint times for a soccer team are found to be normally distributed with a mean of 5.2 seconds and a standard deviation of 0.3 seconds. What is the z-score for a player who runs a time of 4.6 seconds?answer choices
- Question 4300 secondsQ. The mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5. What proportion of weeks would you expect to have less than 5 accidents?answer choices
- Question 5300 secondsQ. The mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5. What proportion of weeks would you expect to have more than 7 accidents?answer choices
- Question 6300 secondsQ. The mean GPA of students in a course at UCDavis is 3.2 with a standard deviation of 0.3. What percent of students in the course have a GPA between 2.9 and 3.8?answer choices
- Question 7300 secondsQ. Between what two standard deviations of a normal distribution contain 68% of the data?answer choices
- Question 8300 secondsQ. The average waist size for teenage males is 29 inches with a standard deviation of 1.4 inch.

If waist sizes are normally distributed, estimate the proportion of teenagers who will have waist sizes greater than 31 inches?answer choices - Question 9300 secondsQ. The scoring of modern IQ is such that Intelligence Quotients (IQs) have a normal distribution of μ= 100 and 𝞂 = 15.

Mensa International is a non-profit organization that accepts only people with IQ score within the top 2%. What level of IQ qualifies one to be a member of Mensa?answer choices - Question 10300 secondsQ. What is the the total area under the standard normal distribution curve?answer choices
- Question 11300 secondsQ. μ = 70 , σ = 8 , X = 50 . Find z scoreanswer choices
- Question 12300 secondsQ. The z-score represents.....answer choices
- Question 13300 secondsQ. The distances male long jumpers for State College jump are approximately normal with a mean of 263 inches and a standard deviation of 14 inches.

Suppose a male long jumper's jump ranked in the 75th percentile. How long was his jump?answer choices - Question 1460 secondsQ. What is the the total area under the standard normal distribution curve?answer choices
- Question 1545 secondsQ. The shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days.

About what percent of the products last between 12 and 15 days?answer choices - Question 1630 secondsQ. Which is NOT true about the standard normal distribution?answer choices

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