Question

The mean amount of time it takes a kidney stone to pass is 15
days and the standard deviation is 5 days. Suppose that one
individual is randomly chosen. Let X = time to pass the kidney
stone.

a. What is the distribution of X? X ~
N(__________,__________)

b. Find the probability that a randomly selected person with a
kidney stone will take longer than 13 days to pass it. Round to 4
decimal places.__________

Answer #1

Suppose that the amount of time that Parsnip takes to eat his
food follows an approximate normal distribution with mean 41.25
seconds and standard deviation 4.4 seconds. A simple random sample
of 20 days is selected and the amount of time that Parsnip takes to
eat his food is determined for each day. If appropriate, describe
completely the sampling distribution of X with bar on top, the
resulting mean amount of time that Parsnip takes to eat his food
for...

The mean incubation time for a type of fertilized egg kept at
100.6F is 19 days. Suppose that the incubation times are
approximately normally distributed with a standard deviation of 2
days.
(a) What is the probability that a randomly selected fertilized
egg hatches in less than 17 days?
(b) What is the probability that a randomly selected fertilized
egg takes over 21 days to hatch?
(c) What is the probability that a randomly selected fertilized
egg hatches between 15...

Suppose that the amount of time that Parsnip takes to eat his
food follows an approximate normal distribution with mean 41.25
seconds and standard deviation 4.4 seconds. A simple random sample
of 20 days is selected and the amount of time that Parsnip takes to
eat his food is determined for each day. If appropriate, describe
completely the sampling distribution of , the resulting mean amount
of time that Parsnip takes to eat his food for this sample of 20...

The mean incubation time for a type of fertilized egg kept at
100.6?°F is 21 days. Suppose that the incubation times are
approximately normally distributed with a standard deviation of 2
days. ?(a) What is the probability that a randomly selected
fertilized egg hatches in less than 17 ?days? ?(b) What is the
probability that a randomly selected fertilized egg hatches between
19 and 21 ?days? ?(c) What is the probability that a randomly
selected fertilized egg takes over 25...

The percent of fat calories that a person in America consumes
each day is normally distributed with a mean of about 36 and a
standard deviation of 10. Suppose that one individual is randomly
chosen. Let X=percent of fat calories.
a. What is the distribution of X? X ~
N(__________,__________)
b. Find the probability that a randomly selected fat calorie
percent is more than 40. Round to 4 decimal places.__________
c. Find the minimum number for the upper quartile of...

The mean incubation time for a type of fertilized egg kept at
100.8°F is 21 days. Suppose that the incubation times are
approximately normally distributed with a standard deviation of 2
days. (a) What is the probability that a randomly selected
fertilized egg hatches in less than 19 days? (b) What is the
probability that a randomly selected fertilized egg hatches between
17 and 21 days? (c) What is the probability that a randomly
selected fertilized egg takes over 23...

The amount of syrup that people put on their pancakes is
normally distributed with mean 56 mL and standard deviation 12 mL.
Suppose that 41 randomly selected people are observed pouring syrup
on their pancakes. Round all answers to 4 decimal places where
possible.
What is the distribution of XX? XX ~ N(,)
What is the distribution of ¯xx¯? ¯xx¯ ~ N(,)
If a single randomly selected individual is observed, find the
probability that this person consumes is between 56.7...

The mean incubation time for a type of fertilized egg kept at
100.3?°F is 22 days. Suppose that the incubation times are
approximately normally distributed with a standard deviation of 1
day.
?(a) What is the probability that a randomly selected fertilized
egg hatches in less than 21 days?
?(b) What is the probability that a randomly selected fertilized
egg hatches between 20 and 22 days?
?(c) What is the probability that a randomly selected fertilized
egg takes over 23...

The time it takes for customers at a Lawrence, Kansas store to
check out is normally distributed with a mean of 10.2 minutes and a
standard deviation of 1.8 minutes. Let the random variable X
measure the time it takes for a randomly selected customer at the
Lawerence, Kansas store to check out
A) State the distribution of the random variable defined
above
B) Compute the probability that a randomly selected customer at
the Lawrence, Kansas store will wait less...

The patient recovery time from a particular surgical procedure
is normally distributed with a mean of 4 days and a standard
deviation of 1.9 days. Let X be the recovery time for a randomly
selected patient. Round all answers to 4 decimal places where
possible.
a. What is the distribution of X? X ~ N(,)
b. What is the median recovery time? days
c. What is the Z-score for a patient that took 6 days to
recover?
d. What is the...

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