Lengths of pregnancies (in humans) have a mean of 268.3 days and a standard deviation of 15.1 days. a woman tracked her pregnancy and found it to be 310 days. find the z score for 310 days. is such a length unusual? the z score is 2.8-2.76 2.76. (round to two decimal places as needed.) is a pregnancy length of 310 days unusual? a. yes, because its corresponding z score is less than 2. b. yes, because its corresponding z score is greater than 2. c. no, because its corresponding z score is greater than 2. d. no, because its corresponding z score is less than 2.

Option B) Yes, because its corresponding z score is greater than 2.        

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 268.3 days

Standard Deviation, σ = 15.1 days

We are given that the distribution of lengths of pregnancies is a bell shaped distribution that is a normal distribution.

Formula:

For x = 310

Since the obtained z score is greater than 2 we could that 310 is unusual.

Option B) Yes, because its corresponding z score is greater than 2.

what does x eaqual

step-by-step explanation:

step-by-step explanation:

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