The average amount of money spent for lunch per person in the college cafeteria is $5.82 and the standard deviation is $2.5. Suppose that 46 randomly selected lunch patrons are observed. Assume the distribution of money spent is normal, and round all answers to 4 decimal placeswhere possible. a. What is the distribution of X? X N 5.82 b. What is the distribution of ? N 5.82 ✓.2.5 0.3686 O 0 c. For a single randomly selected lunch patron, find the probability that this patron's lunch cost is between $5.2871 and $5.6314. 0.0514 d. For the group of 46 patrons, find the probability that the average lunch cost is between $5.2871 and $5.6314. 0.2315 X e. For part d), is the assumption that the distribution is normal necessary? No Yes o

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Help!!! With c and d
The average amount of money spent for lunch per person in the college cafeteria is $5.82 and the standard
deviation is $2.5. Suppose that 46 randomly selected lunch patrons are observed. Assume the distribution
of money spent is normal, and round all answers to 4 decimal places where possible.
a. What is the distribution of X? X N 5.82
✓2.5
OT
b. What is the distribution of ? N 5.82
Ou
0.3686
OB
c. For a single randomly selected lunch patron, find the probability that this patron's lunch cost is
between $5.2871 and $5.6314. 0.0514
X
d. For the group of 46 patrons, find the probability that the average lunch cost is between $5.2871 and
$5.6314. 0.2315
X
e. For part d), is the assumption that the distribution is normal necessary? No Yes o
Hint:
Hint
OT
Transcribed Image Text:The average amount of money spent for lunch per person in the college cafeteria is $5.82 and the standard deviation is $2.5. Suppose that 46 randomly selected lunch patrons are observed. Assume the distribution of money spent is normal, and round all answers to 4 decimal places where possible. a. What is the distribution of X? X N 5.82 ✓2.5 OT b. What is the distribution of ? N 5.82 Ou 0.3686 OB c. For a single randomly selected lunch patron, find the probability that this patron's lunch cost is between $5.2871 and $5.6314. 0.0514 X d. For the group of 46 patrons, find the probability that the average lunch cost is between $5.2871 and $5.6314. 0.2315 X e. For part d), is the assumption that the distribution is normal necessary? No Yes o Hint: Hint OT
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