f. Find the IQR for the average of 33 coffee drinkers. Q1 = Q3 = IQR: ounces ounces ounces

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Author:Amos Gilat
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The amount of coffee that people drink per day is normally
distributed with a mean of 17 ounces and a standard
deviation of 7 ounces. 33 randomly selected people are
surveyed. Round all answers to 4 decimal places where
possible.
a. What is the distribution of X? X - N( 17
7
OB
b. What is the distribution of x? - N17
33 X
c. What is the probability that one randomly selected
person drinks between 16.8 and 17.1 ounces of coffee
per day? 0.0171
من
من
d. For the 33 people, find the probability that the
average coffee consumption is between 16.8 and 17.1
ounces of coffee per day. 0.0012
X
OB
e. For part d), is the assumption that the distribution is
normal necessary? No Yes o
f. Find the IQR for the average of 33 coffee drinkers.
Q1
Q3 =
IQR:
ounces
ounces
ounces
Transcribed Image Text:The amount of coffee that people drink per day is normally distributed with a mean of 17 ounces and a standard deviation of 7 ounces. 33 randomly selected people are surveyed. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - N( 17 7 OB b. What is the distribution of x? - N17 33 X c. What is the probability that one randomly selected person drinks between 16.8 and 17.1 ounces of coffee per day? 0.0171 من من d. For the 33 people, find the probability that the average coffee consumption is between 16.8 and 17.1 ounces of coffee per day. 0.0012 X OB e. For part d), is the assumption that the distribution is normal necessary? No Yes o f. Find the IQR for the average of 33 coffee drinkers. Q1 Q3 = IQR: ounces ounces ounces
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