Question
In: Statistics and Probability
The heights of 18-year-old men are approximately normally distributed with a mean of 68 inches and...
| The heights of 18-year-old men are approximately normally distributed with a mean of 68 inches and a standard deviation of 3 inches. | ||||||
| (a) What is the probability that an 18-year-old man selected at random is between 67 and 69 inches tall? | ||||||
| (b) For a sample of 36 18-year-old men, what is the probability that the average of their heights is between 67 and 69 inches? |
Solutions
orchestra answered 1 year agoRelated Solutions
8.The heights of 18 year old men are approximately normally distributed, with mean 68 inches and...
8.The heights of 18 year old men are approximately normally
distributed, with mean 68 inches and standard deviation 3 inches.
If a random sample of nine 18 year old men is selected, what is the
probability that the mean height ?̅ is between 67 and 69
inches?
___________________
9. Startup costs (in thousands of dollars) for a random sample
of candy stores are given below.
95 173 129 95 75 94 116 100 85
?̅ = 106.9 ??? ? =...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 68 inches and standard...
Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 68 inches and standard deviation 5
inches. (a) What is the probability that an 18-year-old man
selected at random is between 67 and 69 inches tall? (Round your
answer to four decimal places.) (b) If a random sample of twelve
18-year-old men is selected, what is the probability that the mean
height x is between 67 and 69 inches? (Round your answer to four
decimal places.) (c) Compare...
The heights of 18-year-old men are approximately normally distributed with mean 68 inches and standard deviation...
The heights of 18-year-old men are approximately normally
distributed with mean 68 inches and standard deviation 3 inches.
What is the probability that the height of an 18-year-old man
selected at random is between 66 inches and 67 inches? 0.8807
0.4283 0.1193 0.3807 0.1333.
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 68 inches and standard...
Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 68 inches and standard
deviation 3inches.
(a) What is the probability that an 18-year-old man selected at
random is between 67 and 69 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 67
and 69 inches? (Round your answer to four decimal places.)
The heights of 18-year-old men are approximately normally distributed with mean 68 inches and standard deviation...
The heights of 18-year-old men are approximately normally
distributed with mean 68 inches and standard deviation 3 inches.
What is the probability that the average height of a sample of
twenty 18-year-old men will be less than 69 inches? Round your
answer to four decimal places.
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 68 inches and standard...
Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 68 inches and standard
deviation 2 inches.
(a) What is the probability that an 18-year-old man selected at
random is between 67 and 69 inches tall? (Round your answer to four
decimal places.)
(b) If a random sample of twenty-nine 18-year-old men is selected,
what is the probability that the mean height x is between
67 and 69 inches? (Round your answer to four decimal places.)
(c) Compare...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 68 inches and standard...
Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 68 inches and standard
deviation 4 inches.
(a) What is the probability that an 18-year-old man selected at
random is between 67 and 69 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
67 and 69 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...
Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 67 inches and standard
deviation 3 inches.
b) If a random sample of thirteen 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.)
_________________
Let x represent the dollar amount spent on supermarket
impulse buying in a 10-minute (unplanned) shopping interval. Based
on a certain article, the mean of the x...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 71 inches and standard...
Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 71 inches and standard
deviation 5 inches.
(a) What is the probability that an 18-year-old man
selected at random is between 70 and 72 inches tall? (Round your
answer to four decimal places.)
(b) If a random sample of twenty-four 18-year-old men is
selected, what is the probability that the mean height x
is between 70 and 72 inches? (Round your answer to four decimal
places.)
(c) Compare...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 72 inches and standard...
Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 72 inches and standard
deviation 5 inches.
1. What is the probability that an 18-year-old man selected at
random is between 71 and 73 inches tall? (Round your answer to four
decimal places.)
__________________
2. If a random sample of fourteen 18-year-old men is selected, what
is the probability that the mean height x is between 71
and 73 inches? (Round your answer to four decimal places.)
_________________...
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