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In a country, a day can be either rainy or sunny. The probability of a day being rainy is 40.0% . Suppose, you have chosen 15 random days in a year. a. What is the mean number of rainy days among all those chosen days? Answer in exact fraction, or rounded to at least 2 decimal places. b. What is the standard deviation in the number of rainy days? Answer in exact fraction, or rounded to at least 2 decimal places. c. What is the probability that the number of rainy days is more than 1 standard deviations away from the mean value?

In a country, a day can be either rainy or sunny. The probability of a day being rainy is 40.0% . Suppose, you have chosen 15 random days in a year. a. What is the mean number of rainy days among all those chosen days? Answer in exact fraction, or rounded to at least 2 decimal places. b. What is the standard deviation in the number of rainy days? Answer in exact fraction, or rounded to at least 2 decimal places. c. What is the probability that the number of rainy days is more than 1 standard deviations away from the mean value?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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In a country, a day can be either rainy or sunny. The probability of a day being rainy is 40.0% . Suppose, you have chosen 15 random days in a year. a. What is the mean number of rainy days among all those chosen days? Answer in exact fraction, or rounded to at least 2 decimal places. b. What is the standard deviation in the number of rainy days? Answer in exact fraction, or rounded to at least 2 decimal places. c. What is the probability that the number of rainy days is more than 1 standard deviations away from the mean value?
Transcribed Image Text:In a country, a day can be either rainy or sunny. The probability of a day being rainy is 40.0% . Suppose, you have chosen 15 random days in a year. a. What is the mean number of rainy days among all those chosen days? Answer in exact fraction, or rounded to at least 2 decimal places. b. What is the standard deviation in the number of rainy days? Answer in exact fraction, or rounded to at least 2 decimal places. c. What is the probability that the number of rainy days is more than 1 standard deviations away from the mean value?
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