A leading magazine (like Barron's) reported at one time that the average number of weeks an individual is unemployed is 21 weeks. Assume that for the population of all unemployed individuals the population mean length of unemployment is 21 weeks and that the population standard deviation is 2.3 weeks. Suppose you would like to select a random sample of 65 unemployed individuals for a follow-up study. Find the probability that a single randomly selected value is greater than 21.4. P(x > 21.4) = 0.4325 x (Enter your answers as numbers accurate to 4 decimal places.) Find the probability that a sample of size n = 65 is randomly selected with a mean greater than 21.4. P(x > 21.4) = 0.0808(Enter your answers as numbers accurate to 4 decimal places.)
A leading magazine (like Barron's) reported at one time that the average number of weeks an individual is unemployed is 21 weeks. Assume that for the population of all unemployed individuals the population mean length of unemployment is 21 weeks and that the population standard deviation is 2.3 weeks. Suppose you would like to select a random sample of 65 unemployed individuals for a follow-up study. Find the probability that a single randomly selected value is greater than 21.4. P(x > 21.4) = 0.4325 x (Enter your answers as numbers accurate to 4 decimal places.) Find the probability that a sample of size n = 65 is randomly selected with a mean greater than 21.4. P(x > 21.4) = 0.0808(Enter your answers as numbers accurate to 4 decimal places.)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
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:A leading magazine (like Barron's) reported at one time that the average number of weeks an individual is
unemployed is 21 weeks. Assume that for the population of all unemployed individuals the population mean
length of unemployment is 21 weeks and that the population standard deviation is 2.3 weeks. Suppose you
would like to select a random sample of 65 unemployed individuals for a follow-up study.
Find the probability that a single randomly selected value is greater than 21.4.
P(x > 21.4) = 0.4325 × (Enter your answers as numbers accurate to 4 decimal places.)
Find the probability that a sample of size n = 65 is randomly selected with a mean greater than 21.4.
P(> 21.4) = 0.0808 (Enter your answers as numbers accurate to 4 decimal places.)
Transcribed Image Text:A leading magazine (like Barron's) reported at one time that the average number of weeks an individual is
unemployed is 19.8 weeks. Assume that for the population of all unemployed individuals the population
mean length of unemployment is 19.8 weeks and that the population standard deviation is 5.9 weeks.
Suppose you would like to select a random sample of 152 unemployed individuals for a follow-up study.
Find the probability that a single randomly selected value is between 19 and 20.7.
P(19 < x < 20.7) = 0.1153 or
Find the probability that a sample of size n = 152 is randomly selected with a mean between 19 and 20.7.
P(19 << 20.7) = 0.9244 X
Enter your answers as numbers accurate to 4 decimal places.
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