Question

marketing research company desires to know the mean consumption of meat per week among people over...

marketing research company desires to know the mean consumption of meat per week among people over age 31. A sample of 369 people over age 31 was drawn and the mean meat consumption was 2.4 pounds. Assume that the population standard deviation is known to be 0.7 pounds. Construct the 85% confidence interval for the mean consumption of meat among people over age 31. Round your answers to one decimal place. Lower endpoint- High endpoint-

Homework Answers

Answer #1

Solution:-
given
marketing research company desires to know the mean consumption of meat per week among people over age 31.
A sample of 369 people over age 31 was drawn and the mean meat consumption was 2.4 pounds. Assume that the population standard deviation is known to be 0.7 pounds.
therfore
mean = 2.4 ,
sd =0.7 ,
n = 369
by using z value calculator
Z = 1.44
85% confidence interval for the mean :
X +/- Z * s/sqrt(n)
= 2.4 +/- 1.44*0.7/sqrt(369)
= 2.4 +/- 1.008/19.2
= 2.4 +/- 0.0525
= (2.3475 , 2.4525)
therefore
Lower endpoint = 2.3

Upper endpoint = 2.5

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A research company desires to know the mean consumption of meat per week among people over...
A research company desires to know the mean consumption of meat per week among people over age 32. A sample of 576 people over age 32 was drawn and the mean meat consumption was 4.9 pounds. Assume that the population standard deviation is known to be 1 pounds. Construct the 85% confidence interval for the mean consumption of meat among people over age 32. Round your answers to one decimal place.
A research company desires to know the mean consumption of meat per week among people over...
A research company desires to know the mean consumption of meat per week among people over age 29. A sample of 2092 people over age 29 was drawn and the mean meat consumption was 2.9 pounds. Assume that the population standard deviation is known to be 1.4 pounds. Construct the 95% confidence interval for the mean consumption of meat among people over age 29. Round your answers to one decimal place.
A marketing research company desires to know the mean consumption of milk per week among people...
A marketing research company desires to know the mean consumption of milk per week among people over age 45. A sample of 306 people over age 45 was drawn and the mean milk consumption was 3.9 liters. Assume that the population standard deviation is known to be 0.7 liters. Construct the 98% confidence interval for the mean consumption of milk among people over age 45. Round your answers to one decimal place. lowewrendpoint------upper endpoint------
A marketing research company desires to know the mean consumption of meat per week among people...
A marketing research company desires to know the mean consumption of meat per week among people over age 31. They believe that the meat consumption has a mean of 4.7 pounds, and want to construct a 80% confidence interval with a maximum error of 0.090.09 pounds. Assuming a variance of 0.64 pounds, what is the minimum number of people over age 31 they must include in their sample? Round your answer up to the next integer.
A marketing research company desires to know the mean consumption of milk per week among males...
A marketing research company desires to know the mean consumption of milk per week among males over age 25. A sample of 2213 males over age 25 was drawn and the mean milk consumption was 2.4 liters. Assume that the population standard deviation is known to be 1.2 liters. Construct the 95% confidence interval for the mean consumption of milk among males over age 25. Round your answers to one decimal place. lower and upper endpoint
A research company desires to know the mean consumption of meat per week among people over...
A research company desires to know the mean consumption of meat per week among people over age 32. They believe that the meat consumption has a mean of 3 pounds, and want to construct a 80% confidence interval with a maximum error of 0.09 pounds. Assuming a standard deviation of 1 pounds, what is the minimum number of people over age 32 they must include in their sample? Round your answer up to the next integer.
A research company desires to know the mean consumption of meat per week among people over...
A research company desires to know the mean consumption of meat per week among people over age 29. They believe that the meat consumption has a mean of 2.6 pounds, and want to construct a 95% confidence interval with a maximum error of 0.06 pounds. Assuming a variance of 1.96 pounds, what is the minimum number of people over age 29 they must include in their sample? Round your answer up to the next integer.
A research company desires to know the mean consumption of meat per week among people over...
A research company desires to know the mean consumption of meat per week among people over age 27. They believe that the meat consumption has a mean of 2.1 pounds, and want to construct a 99% confidence interval with a maximum error of 0.09 pounds. Assuming a variance of 1.44 pounds, what is the minimum number of people over age 27 they must include in their sample? Round your answer up to the next integer.
research company desires to know the mean consumption of milk per week among males over age...
research company desires to know the mean consumption of milk per week among males over age 4545. A sample of 18421842 males over age 4545 was drawn and the mean milk consumption was 4.94.9 liters. Assume that the population standard deviation is known to be 1.61.6 liters. Construct the 99%99% confidence interval for the mean consumption of milk among males over age 4545. Round your answers to one decimal place. Answer(How to Enter) 2 Points Keypad Tables Lower endpoint:       Upper...
A research company desires to know the mean consumption of milk per week among males over...
A research company desires to know the mean consumption of milk per week among males over age 3131. A sample of 25972597 males over age 3131 was drawn and the mean milk consumption was 2.12.1 liters. Assume that the population standard deviation is known to be 1.31.3 liters. Construct the 95%95% confidence interval for the mean consumption of milk among males over age 3131. Round your answers to one decimal place