Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean u = 287 days and standard deviation o = 14 days. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table_(page 2). (a) What is the probability that a randomly selected pregnancy lasts less than 282 days? The probability that a randomly selected pregnancy lasts less than 282 days is approximately 0.3605 . (Round to four decimal places as needed.) (b) What is the probability that a random sample of 15 pregnancies has a mean gestation period of 282 days or less? The probability that the mean of a a random sample of 15 pregnancies is less than 282 days is approximately 0. (Round to four decimal places as needed.)

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.