jhick9279
20.09.2019 •
Mathematics
Based on data from the national center for health statistics, n. wetzel used the normal distribution to model the length of gestation for pregnant u.s. women (chance, spring 2001). gestation length has a mean of 280 days with a standard deviation of 20 days. (a) find the probability that gestation length is between 275.5 and 276.5 days. (this estimates the probability that a woman has her baby 4 days earlier than the ‘‘average’’ due date.)
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Ответ:
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Step-by-step explanation:
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Ответ:
The coach should start recruiting players with weight 269.55 pounds or more.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 225 pounds
Standard Deviation, σ = 43 pounds
We are given that the distribution of weights is a bell shaped distribution that is a normal distribution.
Formula:
We have to find the value of x such that the probability is 0.15
Calculation the value from standard normal z table, we have,
Thus, the coach should start recruiting players with weight 269.55 pounds or more.