489 Section 9.2 9.11 Babies Weights (Example 20) Some sources report that the weights of full-term newborn babies have a mean of 7 pounds and a standard deviation of 0.6 pound and are Normally distributed. a. What is the probability that one newborn baby will have a weight within 0.6 pound of the mean-that is, between 6.4 and 7.6 pounds, or within one standard deviation of the mean? b. What is the probability the average of four babies' weights will be within 0.6 pound of the mean-that is, between 6.4 and 7.6 pounds? c. Explain the difference between a and b.

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