Question

1.

What price do farmers get for their watermelon crops? In the
third week of July, a random sample of 45 farming regions gave a
sample mean of *x* = $6.88 per 100 pounds of watermelon.
Assume that *σ* is known to be $1.94 per 100 pounds.

(a) Find the sample size necessary for a 90% confidence level
with maximal error of estimate *E* = 0.31 for the mean price
per 100 pounds of watermelon. (Round up to the nearest whole
number.)

(b). 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 margin of error? *Hint:* 1 ton is 2000
pounds. (Round your answers to two decimal places.)

lower limit =

upper limit =

margin of error =

Answer #1

a) To find sample size(n) such that

Margin of error = 0.31

b)

What price do farmers get for their watermelon crops? In the
third week of July, a random sample of 43 farming regions gave a
sample mean of x = $6.88 per 100 pounds of watermelon.
Assume that σ is known to be $1.94 per 100 pounds.
(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? (Round your answers
to...

What price do farmers get for their watermelon crops? In the
third week of July, a random sample of 41 farming regions gave a
sample mean of x = $6.88 per 100 pounds of watermelon.
Assume that σ is known to be $2.00 per 100 pounds.
(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? (Round your answers
to...

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 σ is known to be $1.96 per 100 pounds.
(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? (Round your answers
to...

What price do farmers get for their watermelon crops? In the
third week of July, a random sample of 41 farming regions gave a
sample mean of x = $6.88 per 100 pounds of watermelon.
Assume that σ is known to be $1.92 per 100 pounds.
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? (Round your answers
to two...

What price do farmers get for their watermelon crops? In the
third week of July, a random sample of 43 farming regions gave a
sample mean of x = $6.88 per 100 pounds of watermelon.
Assume that σ is known to be $1.98 per 100 pounds.
(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? (Round your answers
to...

What price do farmers get for their watermelon crops? In the
third week of July, a random sample of 43 farming regions gave a
sample mean of x = $6.88 per 100 pounds of watermelon.
Assume that σ is known to be $1.94 per 100 pounds.
(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? (Round your answers
to...

What price do farmers get for their watermelon crops? In the
third week of July, a random sample of 45 farming regions gave a
sample mean of x bar = $6.88 per 100 pounds of watermelon. Assume
that σ is known to be $1.94 per 100 pounds.
(b)
Find the sample size necessary for a 90% confidence level with
maximal error of estimate E = 0.25 for the mean price per
100 pounds of watermelon. (Enter a number. Round up...

What price do farmers get for their watermelon crops? In the
third week of July, a random sample of 43 farming regions gave a
sample mean of x = $6.88 per 100 pounds of watermelon.
Assume that σ is known to be $1.94 per 100 pounds.
(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? (Round your answers
to...

What price do farmers get for their watermelon crops? In the
third week of July, a random sample of 38 farming regions gave a
sample mean of x = $6.88 per 100 pounds of watermelon. Assume that
σ is known to be $1.80 per 100 pounds.
(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) Find the sample...

What price do farmers get for their watermelon crops? In the
third week of July, a random sample of 45 farming regions gave a
sample mean of x = $6.88 per 100 pounds of watermelon.
Assume that σ is known to be $1.98 per 100 pounds.
(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? (Round your answers
to...

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