Question

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 bar = $6.88 per 100 pounds of watermelon. Assume
that σ is known to be $1.90 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 (in dollars). What is the margin of error (in
dollars)? (For each answer, enter a number. Round your answers to
two decimal places.)

lower limit $

upper limit $

margin of error $

(b) Find the sample size necessary for a 90% confidence level
with maximal error of estimate E = 0.29 for the mean price per 100
pounds of watermelon. (Enter a number. Round up to the nearest
whole number.)

farming regions

(c) A farm brings 15 tons of watermelon to market. Find a 90%
confidence interval for the population mean cash value of this crop
(in dollars). What is the margin of error (in dollars)? Hint: 1 ton
is 2000 pounds. (For each answer, enter a number. Round your
answers to two decimal places.)

lower limit $

upper limit $

margin of error $

Answer #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 bar = $6.88 per 100 pounds of watermelon. Assume
that σ is known to be $1.90 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 (in
dollars). What is the margin of error (in...

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 = $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 (in dollars).
What is the margin of error (in dollars)? (For...

What price do farmers get for their watermelon crops? In the
third week of July, a random sample of 44 farming regions gave a
sample mean of x = $6.88 per 100 pounds of watermelon. Assume that
σ is known to be $1.90 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 (in dollars).
What is the margin of error (in dollars)?...

What price do farmers get for their watermelon crops? In the
third week of July, a random sample of 44 farming regions gave a
sample mean of x bar = $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 (in
dollars). What is the margin of error (in...

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 bar = $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 (in dollars). What is the margin of error (in...

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 bar = $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 (in
dollars). What is the margin of error (in...

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 bar = $6.88 per 100 pounds of watermelon. Assume
that σ is known to be $1.90 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 (in
dollars). What is the margin of error (in...

What price do farmers get for their watermelon crops? In the
third week of July, a random sample of 44 farming regions gave a
sample mean of = $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 (in dollars). What is the margin of error (in
dollars)? (For each...

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 bar = $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 (in
dollars). What is the margin of error (in...

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 bar = $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 (in dollars). What is the margin of error (in...

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