Example 2- Part 1 The annual salary for a certain job has a normal distribution with a mean of $54, 000 and a standard deviation of o = $5000. 1. Which sample size would allow us to use the normal approximation? n • (Click to view hint) 2. What is the probability that the mean salary of random sample of 100 workers is no more than $54,215? (Do not include the dollar sign) b. 0z (Click to view hint) c. Which picture (below) shows the requested area? Curve Image Curve 1 4a lo 20 30 40
Example 2- Part 1 The annual salary for a certain job has a normal distribution with a mean of $54, 000 and a standard deviation of o = $5000. 1. Which sample size would allow us to use the normal approximation? n • (Click to view hint) 2. What is the probability that the mean salary of random sample of 100 workers is no more than $54,215? (Do not include the dollar sign) b. 0z (Click to view hint) c. Which picture (below) shows the requested area? Curve Image Curve 1 4a lo 20 30 40
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:Example 2- Part 1
The annual salary for a certain job has a normal distribution with a mean of $54, 000 and a standard deviation of o = $5000.
1. Which sample size would allow us to use the normal approximation? n =
(Click to view hint)
2. What is the probability that the mean salary of random sample of 100 workers is no more than $54,215?
a. H =
(Do not include the dollar sign)
b.0
(Click to view hint)
c. Which picture (below) shows the requested area?
Curve
Image
Curve 1
40
20
30
4o

Transcribed Image Text:VSC
Curve 4
-40
-30
-20
-1o
10
20
Curve 5
40
-30
-20
-10
la
30
40
d. P(x
: 54, 215) = P(z
e. There is a(n)
% chance that the mean size of a random sample is no more than $54, 215
Check
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