Question

Suppose the heights of 18-year-old men are approximately normally distributed, with mean 66 inches and standard deviation 2 inches. (a) What is the probability that an 18-year-old man selected at random is between 65 and 67 inches tall? (Round your answer to four decimal places.) (b) If a random sample of fourteen 18-year-old men is selected, what is the probability that the mean height x is between 65 and 67 inches? (Round your answer to four decimal places.)

Answer #1

Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 65 inches and standard
deviation 4 inches.
(a) What is the probability that an 18-year-old man selected at
random is between 64 and 66 inches tall? (Round your answer to four
decimal places.)
(b) If a random sample of eleven 18-year-old men is selected, what
is the probability that the mean height x is between 64
and 66 inches? (Round your answer to four decimal
places.)

Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 67 inches and standard
deviation 2 inches.
(a) What is the probability that an 18-year-old man selected at
random is between 66 and 68 inches tall? (Round your answer to four
decimal places.)
(b) If a random sample of eleven 18-year-old men is selected,
what is the probability that the mean height x is between
66 and 68 inches? (Round your answer to four decimal places.)
(c) Compare...

Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 65 inches and standard
deviation 5 inches.
(a) What is the probability that an 18-year-old man selected at
random is between 64 and 66 inches tall? (Round your answer to four
decimal places.)
(b) If a random sample of nineteen 18-year-old men is selected,
what is the probability that the mean height x is between
64 and 66 inches? (Round your answer to four decimal places.)
(c) Compare...

Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 67 inches and standard
deviation 3 inches.
(a) What is the probability that an 18-year-old man
selected at random is between 66 and 68 inches tall? (Round your
answer to four decimal places.)
(b) If a random sample of twenty-five 18-year-old men is
selected, what is the probability that the mean height x
is between 66 and 68 inches? (Round your answer to four decimal
places.)
(c) Compare...

Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 67 inches and standard
deviation 1 inches.
(a) What is the probability that an 18-year-old man selected at
random is between 66 and 68 inches tall? (Round your answer to four
decimal places.)
(b) If a random sample of twenty-six 18-year-old men is selected,
what is the probability that the mean height x is between
66 and 68 inches? (Round your answer to four decimal places.)
(c) Compare...

Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 69 inches and standard
deviation 6 inches.
(b) If a random sample of twenty-seven 18-year-old men is selected,
what is the probability that the mean height x is between
68 and 70 inches? (Round your answer to four decimal
places.)

Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 70 inches and standard deviation 6
inches.
(a) What is the probability that an 18-year-old man selected at
random is between 69 and 71 inches tall? (Round your answer to four
decimal places.)
(b) If a random sample of twenty 18-year-old men is selected,
what is the probability that the mean height x is between 69 and 71
inches? (Round your answer to four decimal places.)
(c) Compare...

Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 69 inches and standard
deviation 5 inches.
(a) What is the probability that an 18-year-old man selected at
random is between 68 and 70 inches tall? (Round your answer to four
decimal places.)
(b) If a random sample of thirty 18-year-old men is selected, what
is the probability that the mean height x is between 68
and 70 inches? (Round your answer to four decimal places.)
(c) Compare...

Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 73 inches and standard deviation 2
inches. (a) What is the probability that an 18-year-old man
selected at random is between 72 and 74 inches tall? (Round your
answer to four decimal places.) (b) If a random sample of eleven
18-year-old men is selected, what is the probability that the mean
height x is between 72 and 74 inches? (Round your answer to four
decimal places.) (c) Compare...

Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 69 inches and standard
deviation 2 inches.
(a) What is the probability that an 18-year-old man selected at
random is between 68 and 70 inches tall? (Round your answer to four
decimal places.)
(b) If a random sample of ten 18-year-old men is selected, what is
the probability that the mean height x is between 68 and
70 inches? (Round your answer to four decimal places.)
(c) Compare...

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