Question

What price do farmers get for their watermelon crops? In the
third week of July, a random sample of 42 farming regions gave a
sample mean of = $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
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* = 0.35 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 $

Assume that *x* has a normal distribution with the
specified mean and standard deviation. Find the indicated
probability. (Enter a number. Round your answer to four decimal
places.)

*μ* = 22; *σ* = 4.4

*P*(*x* ≥ 30) =

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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