18. Agriculture: Watermelon What price do farmers get for their watermelon crops? In the third week of July, a random sample of 40 farming regions gave a sample mean of x $6.88 per 100 pounds of watermelon. Assume that o is known to be $1.92 per 100 pounds (Reference: Agricultural Statistics, U.S. Department of Agriculture). (a) Find a 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their watermelon crop. What is the margin of error? (b) Sample Size Find the sample size necessary for a 90% confidence level with maximal margin of error E 0.3 for the mean price per 100 pounds of watermelon. %3D %3D (c) A farm brings 15 tons of watermelon to market. Find a 90% confidence interval for the population mean cash value of this crop. What is the mar- gin of error? Hint: I ton is 2000 pounds. Ta) Interval: b) n= c) Interval: to Margin of error: to Margin of error:
18. Agriculture: Watermelon What price do farmers get for their watermelon crops? In the third week of July, a random sample of 40 farming regions gave a sample mean of x $6.88 per 100 pounds of watermelon. Assume that o is known to be $1.92 per 100 pounds (Reference: Agricultural Statistics, U.S. Department of Agriculture). (a) Find a 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their watermelon crop. What is the margin of error? (b) Sample Size Find the sample size necessary for a 90% confidence level with maximal margin of error E 0.3 for the mean price per 100 pounds of watermelon. %3D %3D (c) A farm brings 15 tons of watermelon to market. Find a 90% confidence interval for the population mean cash value of this crop. What is the mar- gin of error? Hint: I ton is 2000 pounds. Ta) Interval: b) n= c) Interval: to Margin of error: to Margin of error:
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Transcribed Image Text:18. Agriculture: Watermelon What price do farmers get for their watermelon
crops? In the third week of July, a random sample of 40 farming regions gave
a sample mean of x $6.88 per 100 pounds of watermelon. Assume that o
is known to be $1.92 per 100 pounds (Reference: Agricultural Statistics, U.S.
Department of Agriculture).
(a) Find a 90% confidence interval for the population mean price (per 100
pounds) that farmers in this region get for their watermelon crop. What is
the margin of error?
(b) Sample Size Find the sample size necessary for a 90% confidence level
with maximal margin of error E 0.3 for the mean price per 100 pounds
of watermelon.
(c) A farm brings 15 tons of watermelon to market. Find a 90% confidence
interval for the population mean cash value of this crop. What is the mar-
gin of error? Hint: I ton is 2000 pounds.
Ta) Interval:
b) n=
c) Interval:
to
Margin of error:
to
Margin of error:
19. FBI Report: Larceny Thirty small communities in Connecticut (population
near 10,000 each) gave an average of x 138.5 reported cases of larceny per
year. Assume that o is known to be 42.6 cases per year (Reference: Crime in
the United States Federal Bureau of Investigation)
e
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