# Statistics

The weights of adult males are normally distributed with a mean of 172 lb and a standard deviation of 29 lb.
1.Find the weight that divides the upper 2% of weights from the lower 98%.

Can anyone please explain how to do this,I have no idea from where to begin.

Thanks.

1. 👍 0
2. 👎 0
3. 👁 207
1. Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the Z score that fits that proportion.

Insert values in above equation to find weight score.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Edtech

what do you do about cyberbullying if the first adult you tell doesn't take you seriously A.Ignore it B.Tell the adult over and over again C.Tell the bully that you will tell his or her parents D.Tell another trusted adult

2. ### statistics

Suppose that diastolic blood pressure readings of adult males have a bell-shaped distribution with a mean of 84 84 mmHg and a standard deviation of 9 9 mmHg. Using the empirical rule, what percentage of adult males have diastolic

3. ### Algebra

An inspector of weights and measures uses a special set of weights to check the accuracy of scales. Various weights are placed on a scale to check the accuracy of any amount from 1 oz. to 15 oz. What is the fewest number of

4. ### statistics

The height of an adult male is known to be normally distributed with a mean of 69 inches and a standard deviation of 2.5 inches. The height of the doorway is 74 inches. What proportion of adult males will not fit under the door?

1. ### ap Physics

AP PROBLEM CHILD ON A SWING AN ADULT EXERTS A HORIZONTAL FORCE ON A SWING THAT IS SUSPENDED BY A ROPE OF LENGTH L, HOLDING IT AN AN ANGLE q WITH THE VERTICAL. THE CHILD IN THE WING HAS WEIGHT W AND DIMENSIONS THAT ARE NEGLIGIBLE

2. ### algebra

A medical rescue helicopter is flying at an average speed of 172 miles per hour toward its base hospital. At 2:42 p.m., the helicopter is 80 miles from the hospital. Use this information for Items 4–6. 4. Which equation can be

3. ### Statistics

The weights of the fish in a certain lake are normally distributed with a mean of 15lbs. and standard deviation of 6lbs. If a sample of 5 fish are taken from the lake, find the probability their means weights are between 12.6 lbs.

4. ### Calculus

According to the National Health Survey, the heights of adult males in the United States are normally distributed with mean 69.0 inches and standard deviation 2.8 inches. A. What is the probability that an adult male chosen at

1. ### Math

The Empirical Rule: The weight,in the grams, of the pair of kidneys in adult males the ages of 40 and 49 has a bell-shaped distribution with a mean of 325 grams and a standard deviation of 30 grams. A) About 95% of kidney pairs

2. ### Algebra Part II

The local radio station is giving away some tickets to the circus. Adult tickets cost the station \$8 each while children’s tickets cost \$6. The station wants to spend no more than \$172. Let x = the number of adult tickets and y

3. ### Math

The chart below shows the population distribution for the 2,400 occupants of the city of Centre Hill. Adult Male Adult Female Child % Living in Uptown 9 8 6 % Living in Midtown 22 20 15 % Living in Downtown 21 22 12 % Living in

4. ### Statistics

The actual weights of bag of pet food are normally distributed.The mean of the weights is 50.0 lb,with a standard deviation of 0.2 lb. A)About what percent of bags of pet food weigh less than 49.8 lb?