The mean height of women in a country (ages 20- 29) is 63.9 inches. A random sample of 70 women in this age group is selected. What is the probability that the mean height for the sample is greater than 65 inches? Assume o =2.91. The probability that the mean height for the sample is greater than 65 inches is (Round to four decimal places as needed.)
The mean height of women in a country (ages 20- 29) is 63.9 inches. A random sample of 70 women in this age group is selected. What is the probability that the mean height for the sample is greater than 65 inches? Assume o =2.91. The probability that the mean height for the sample is greater than 65 inches is (Round to four decimal places as needed.)
Chapter9: Sequences, Probability And Counting Theory
Section9.7: Probability
Problem 1SE: What term is used to express the likelihood of an event occurring? Are there restrictions on its...
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Transcribed Image Text:The mean height of women in a country (ages 20 – 29) is 63.9 inches. A random sample of 70 women in this age group is
selected. What is the probability that the mean height for the sample is greater than 65 inches? Assume o = 2.91.
The probability that the mean height for the sample is greater than 65 inches is
(Round to four decimal places as needed.)
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Step 1
Let X be the random variable from normal distribution with mean (μ) = 63.9, standard deviation (σ) = 2.91 and sample size (n) = 70
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