The average starting salary for a data analyst is Ph 40,000 and a standard deviation of 5,000. A random sample of size 50 is drawn from the Find the probability that the sample mean X is less than 30,000.

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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  1. The average starting salary for a data analyst is Ph 40,000 and a standard deviation of 5,000. A random sample of size 50 is drawn from the Find the probability that the sample mean X is less than 30,000.

 

  1. A population has mean 555 and standard deviation
    • Find the mean and standard deviation of sample means for samples of size
    • Find the probability that the mean of a sample of size 50 will be more than
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