kevinhernandez582
11.01.2021 •
Mathematics
. The daily sales at a convenience store produce a distribution that is approximately normal with a mean of 1220 and a standard deviation of 110. What is the probability that the sales on a given day at this store are less than $1,305, rounded to four decimal places
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Ответ:
0.78015
Step-by-step explanation:
Given that :
Mean, μ = 1220
Standard deviation, σ = 110
Probability that sales is less Than 1305 on a given day
P(x < 1305) :
Obtain the standardized score Z
Z = (x - μ) / σ
Z = (1305 - 1220) / 110
Z = 85 / 110
Z = 0.7727272 = 0.7727
P(Z < 0.7727) = 0.78015 (Z probability calculator)
Ответ:
26 is the right answer
Step-by-step explanation: