d. Between what two X-values (symmetrically distributed around the mean) are 70% of the values? For this distribution, 70% of the values are between X = and X=[

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Question D
Given a normal distribution with µ = 49 and o = 4, complete parts (a) through (d).
μ
Click here to view page 1 of the cumulative standardized normal distribution table.
Click here to view page 2 of the cumulative standardized normal distribution table.
a. What is the probability that X>43?
P(X>43) = .9332 (Round to four decimal places as needed.)
b. What is the probability that X <41?
P(X<41)= .0228 (Round to four decimal places as needed.)
c. For this distribution, 5% of the values are less than what X-value?
X= 42 (Round to the nearest integer as needed.)
d. Between what two X-values (symmetrically distributed around the mean) are 70% of the values?
For this distribution, 70% of the values are between X and X =
(Round to the nearest integer as needed.)
Transcribed Image Text:Given a normal distribution with µ = 49 and o = 4, complete parts (a) through (d). μ Click here to view page 1 of the cumulative standardized normal distribution table. Click here to view page 2 of the cumulative standardized normal distribution table. a. What is the probability that X>43? P(X>43) = .9332 (Round to four decimal places as needed.) b. What is the probability that X <41? P(X<41)= .0228 (Round to four decimal places as needed.) c. For this distribution, 5% of the values are less than what X-value? X= 42 (Round to the nearest integer as needed.) d. Between what two X-values (symmetrically distributed around the mean) are 70% of the values? For this distribution, 70% of the values are between X and X = (Round to the nearest integer as needed.)
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