Body fat percentages are approximately normally distributed. The average guy in his 20’s (ages 20 – 29)...
Body fat percentages are approximately normally distributed. The average guy in his 20’s (ages 20 – 29) has a body fat percentage of 15.75%. The standard deviation for this group is 0.99%. Find the body fat percentage separating the bottom 5% from the rest of the men in their 20’s.
Homework Answers
Add Answer to:
Body fat percentages are approximately normally
distributed. The average guy in his 20’s (ages 20 – 29)...
The third National Health and Nutrition Examination Survey collected body fat percentage (BF) data from 13,601...
The third National Health and Nutrition Examination Survey collected body fat percentage (BF) data from 13,601 subjects whose ages are 20 to 80. A summary table for these data is given below. Note that BF is given as mean± standard error . Gender n BF(%) Men 6,580 Women 7,021 Construct a 95% confidence interval for the difference in average body fat percentages between men and women. Give your answers to 3 decimal places.
4. Suppose the heights of American men are approximately normally distributed with mean of 68 and...
4. Suppose the heights of American men are approximately normally distributed with mean of 68 and standard deviation of 2.5. find the percentage of American men who are between 63 to 73 in tall. Given that the percentage of area under the standardized normal curve and hence also under any normal distribution X is as follows: 68.2% for -Iszsl and for u-Osxsu+0, 95.4% for - 2 szs2 and for u-20 sxs u +20, 99.7% for - 3szs3 and for u-30...
20. The percent of fat calories that a person in America consumes each day is normally...
20. The percent of fat calories that a person in America consumes each day is normally distributed with a mean of about 36 and a standard deviation of about 10. Suppose that 16 individuals are randomly chosen. Let X = average percent of fat calories. a. For the group of 16, find the probability that the average percent of fat calories consumed is more than 5 ___________Answer b. Find the first quartile for the average percent of fat calories. Round answer...
The percent of fat calories that a person consumes each day is normally distributed with a...
The percent of fat calories that a person consumes each day is normally distributed with a mean of about 37 and a standard deviation of about ten. Suppose that 16 individuals are randomly chosen. Let X = average percent of fat calories. (a) Give the distribution of X. (Round your standard deviation to two decimal places.) (b) For the group of 16, find the probability that the average percent of fat calories consumed is more than four. (Round your answer...
The percent of fat calories that a person consumes each day is normally distributed with a...
The percent of fat calories that a person consumes each day is normally distributed with a mean of 35 and a standard deviation of 10. Suppose that 25 individuals are randomly chosen. Let X = average percent of fat calories. (a) For the group of 25, find the probability that the average percent of fat calories consumed is more than thirty-seven. (Round your answer to four decimal places) b) Find the first quartile for the average percent of fat calories....
The percent of fat calories that a person in America consumes each day is normally distributed...
The percent of fat calories that a person in America consumes each day is normally distributed with a mean of about 36 and a standard deviation of about ten. Suppose that 16 individuals are randomly chosen. (a) For the group of 16, find the probability that the average percent of fat calories consumed is more than thirty-five (Round to 3 decimal places) (b) Find the first quartile for the percent of fat calories. (c) Find the first quartile for the...
A study of a population showed that males' body temperatures are approximately Normally distributed with a...
A study of a population showed that males' body temperatures are approximately Normally distributed with a mean of 98.1 degrees and a population standard deviation of 0.50 degrees°F. What body temperature does a male have if he is at the 95th percentile? Draw a well-labeled sketch to support your answer. He has a body temperature of....?
Assume the heights of men 18 to 24 are approximately normally distributed with μ=70 inches, 3.0...
Assume the heights of men 18 to 24 are approximately normally distributed with μ=70 inches, 3.0 is the standard deviation. A. What percent of men in this age group are taller than 74 inches? Z-score is _____ P-value__________ (hint give the percentage). B. What percent of men in this age group are taller than 65 inches? Z-score is _____ P-value__________ (hint give the percentage). C. What percent of men in this age group are shorter than 69 inches? Z-score is...
The percent of fat calories that a person consumes each day is normally distributed with a...
The percent of fat calories that a person consumes each day is normally distributed with a mean of 34 and a standard deviation of 10. Suppose that 16 individuals are randomly chosen. Let X = average percent of fat calories. (a) For the group of 16, find the probability that the average percent of fat calories consumed is more than thirty-six. (Round your answer to four decimal places.) b) Find the first quartile for the average percent of fat calories....
5.4.33 s Question Help The height of women ages 20-29 is normally distributed, with a mean...
5.4.33 s Question Help The height of women ages 20-29 is normally distributed, with a mean of 64.8 inches. Assume o = 2.7 inches. Are you more likely to randomly select 1 woman with a height less than 65.4 inches or are you more likely to select a sample of 30 women with a mean height less than 65.4 inches? Explain. Click the icon to view page 1 of the standard normal table. Click the icon to view page 2...
4. Suppose the heights of American men are approximately normally distributed with mean of 68 and standard deviation of 2.5. find the percentage of American men who are between 63 to 73 in tall. Given that the percentage of area under the standardized normal curve and hence also under any normal distribution X is as follows: 68.2% for -Iszsl and for u-Osxsu+0, 95.4% for - 2 szs2 and for u-20 sxs u +20, 99.7% for - 3szs3 and for u-30...
5.4.33 s Question Help The height of women ages 20-29 is normally distributed, with a mean of 64.8 inches. Assume o = 2.7 inches. Are you more likely to randomly select 1 woman with a height less than 65.4 inches or are you more likely to select a sample of 30 women with a mean height less than 65.4 inches? Explain. Click the icon to view page 1 of the standard normal table. Click the icon to view page 2...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago