Homework Answers
![P[\bar{x}<200]](http://img.homeworklib.com/questions/51582ed0-cc45-11ea-96c0-519f3e4a4bbe.png?x-oss-process=image/resize,w_560)
![=P[Z<\frac{200-196}{\frac{22}{\sqrt{50}}}]](http://img.homeworklib.com/questions/51a7c1b0-cc45-11ea-b71b-07b951202fd7.png?x-oss-process=image/resize,w_560)
=P[Z<1.29]
=0.9007....................by using Z table.
B) 0.9007
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25) The average number of pounds of red meat a person consumes each year is 196...
The average number of pounds of red meat a person consumes each year is 196 with...
The average number of pounds of red meat a person consumes each year is 196 with a standard deviation of 22 pounds (Source: American Dietetic Association). If a sample of 50 individuals is randomly selected, find the probability that the mean of the sample will be less than 200 pounds.
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. 1. Find the first quartile for the percent of fat calories A study measures blood pressure among college students. The lowest actual blood pressure is 70, and the highest is 130. Each blood pressure test is equally likely. It follows a uniform distribution. So...
Ayrshire cows produce an average of 57 pounds of milk per day with a standard deviation...
Ayrshire cows produce an average of 57 pounds of milk per day with a standard deviation of 6 pounds. Assume the daily production is normally distributed. 20 cows are randomly selected from a herd and their day’s milk production is weighed. Let ȳ be the mean pounds of milk for this sample. a. Find the mean and standard deviation for the sampling distribution of ȳ. b. Use normalcdf with the sample mean ȳ to determine the probability that the mean...
The Aluminum Association reports that the average American uses 56.8 pounds of aluminum in a year....
The Aluminum Association reports that the average American uses 56.8 pounds of aluminum in a year. A random sample of 50 households is monitored for one year to determine aluminum usage. If the population standard deviation of annual usage is 12.2 pounds, what is the probability that the sample mean will be each of the following? a. More than 61 pounds b. More than 57 pounds c. Between 55 and 57 pounds d. Less than 55 pounds e. Less than...
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 33 and a standard deviation of about 9. Suppose that 20 individuals are randomly chosen. Let Xaverage percent of fat calories consumed for a sample of size 20 Enter numbers as integers or fractions in "p/q" form, or as decimals accurate to nearest 0.01 a. (.20) X ~ (pick one) : b. (.20) Use the mean and standard deviation...
calculate the appropriate measure of disease fequency for each group 6. Red meat consumption is common...
calculate the appropriate measure of disease fequency for each
group
6. Red meat consumption is common in the United States. For the purposes of this question, assume that 28% of the population consumes the equivalent of three or more 12 oz. of red meat per week. A study conducted to evaluate the association between red meat consumption and risk of hypertension. At baseline, participants were asked about their typical red meat consumption, and individuals who reported consuming three or more...
The Aluminum Association reports that the average American uses 56.8 pounds of aluminum in a year....
The Aluminum Association reports that the average American uses 56.8 pounds of aluminum in a year. A random sample of 50 households is monitored for one year to determine aluminum usage. If the population standard deviation of annual usage is 12.3 pounds, what is the probability that the sample mean will be each of the following? a. More than 58 pounds b. More than 56 pounds c. Between 55 and 58 pounds d. Less than 53 pounds e. Less than...
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 6 . Suppose that 20 individuals are randomly chosen. Let X¯= average percent of fat calories consumed for a sample of size 20 . Enter numbers as integers or fractions in "p/q" form, or as decimals accurate to nearest 0.01 . (.20) X¯∼ (pick one) ENBP ( , ) . (.20) Use the mean...
Problem 1 The percent of ft caloriesthat a person in America consumes each day is normally...
Problem 1 The percent of ft caloriesthat a person in America consumes each day is normally distributed wth a mean of about 32 and a standard deviation of about 14 Suppose that 12 individuals are randomly chosen Let X= average percent of fat calories consumed for a sample of size 12. Enter numbers as integers or fractions in "p/a" form, or as decimals accurate to nearest 0.01 a. (20) oick one) b. (20) Use the mean and standard devlation of...
Part IV. Practical Applications Each American uses an average of 650 pounds of paper in a year. Assuming that the di...
Part IV. Practical Applications Each American uses an average of 650 pounds of paper in a year. Assuming that the distribution normal with a standard deviation of 153.50 pounds find the probability that a randomly selected American uses: a. More than 800lbs of paper in a year. Answer: b. Less than 400lbs of paper in a year. Answer: C. Between 500 and 700 pounds of paper in a year. Answer:
The percent of fat calories that a person in America consumes each day is normally distributed with a mean of about 33 and a standard deviation of about 9. Suppose that 20 individuals are randomly chosen. Let Xaverage percent of fat calories consumed for a sample of size 20 Enter numbers as integers or fractions in "p/q" form, or as decimals accurate to nearest 0.01 a. (.20) X ~ (pick one) : b. (.20) Use the mean and standard deviation...
calculate the appropriate measure of disease fequency for each
group
6. Red meat consumption is common in the United States. For the purposes of this question, assume that 28% of the population consumes the equivalent of three or more 12 oz. of red meat per week. A study conducted to evaluate the association between red meat consumption and risk of hypertension. At baseline, participants were asked about their typical red meat consumption, and individuals who reported consuming three or more...
Problem 1 The percent of ft caloriesthat a person in America consumes each day is normally distributed wth a mean of about 32 and a standard deviation of about 14 Suppose that 12 individuals are randomly chosen Let X= average percent of fat calories consumed for a sample of size 12. Enter numbers as integers or fractions in "p/a" form, or as decimals accurate to nearest 0.01 a. (20) oick one) b. (20) Use the mean and standard devlation of...
Part IV. Practical Applications Each American uses an average of 650 pounds of paper in a year. Assuming that the distribution normal with a standard deviation of 153.50 pounds find the probability that a randomly selected American uses: a. More than 800lbs of paper in a year. Answer: b. Less than 400lbs of paper in a year. Answer: C. Between 500 and 700 pounds of paper in a year. Answer:
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