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31.07.2019 •
Mathematics
Use the normal distribution of fish lengths for which the mean is 9 inches and the standard deviation is 2 inches. assume the variable x is normally distributed. (a) what percent of the fish are longer than 14 inches? (b) if 300 fish are randomly selected, about how many would you expect to be shorter than 8 inches?
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Ответ:
Step-by-step explanation:
Given that fish length X is having the normal distribution for which the mean is 9 inches and the standard deviation is 2 inches.
X : N(9,2)
A)
B) Here sample size = 300
Out of 300 fish we can expect 300(0.3085) to be shorter
i.e. 92.55=93 fish
Ответ:
answer:
5/12: 2/9:
10/24 4/18
15/36 6/27
step-by-step explanation: