Compute the following probabilities using your calculator. Assume Z is a standard normal random variable. Round all
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Compute the following probabilities using your calculator. Assume Z is a standard normal random variable. Round all answers to three decimal places.
A. P(0
B. P(−1.15
C. P(Z>−1.3))=
D. P(0
E. P(−1.85
F. P(Z>−1.2)=
Suppose the random variable xx is best described by a normal distribution with μ=29μ=29 and σ=3.4σ=3.4. Find the zz-score that corresponds to each of the following xx values.
Round answers to three decimal places
(a) x=16.2
z=
(b) x=33.4
z=
(c) x=17.2
z=
(d) x=38.6
z=
Find the following probabilities for the standard normal random variable z:
Round answers to three decimal places.
(a) P(z≤2.21)=
(b) P(z>−2.27)=
Related Book For
Essentials of Statistics for Business and Economics
ISBN: 978-1305081598
7th edition
Authors: David Anderson, Thomas Williams, Dennis Sweeney, Jeffrey Cam
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