josyley78
29.06.2021 •
Mathematics
X is a normally distributed random variable with a mean of 22 and a standard deviation of 5. The probability that x is less than 9.7 is:
a. 0.0069
b. 0.000
c. 0.4931
d. 0.9931
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Ответ:
0.0069
Step-by-step explanation:
According to the Question,
Given That, X is a normally distributed random variable with a mean of 22 and a standard deviation of 5. The probability that x is less than 9.7We have, μ=22 , σ= 5 , P(X<9.7)=Area to the left of 9.7.
Z = (x-μ)/σ
Z = (9.7-22) / 5 ⇒ -2.46
Thus,
P(X<9.7)=P(Z < -2.46) ⇒ 0.0069 (From z-table)Ответ:
I believe it is 24 batches:
because there are 8/8 in one hour, so you multiply that by three. which would give you 24!