1. Identify whether the numbers are statistics or parameters. a. Of all US third grade teachers, 32% say that knowing cursive writing is an essential skill. b. Of the 500 US third grade teachers polled, 34% say that knowing cursive writing is an essential skill.

2.The body temperature of a healthy adult follows a Normal distribution with a mean of 98.25F and a standard deviation of 0.73F. a. Find the probability that a randomly selected adult will have a body temperature between 98F and 99F. b. Find the mean and standard deviation of the sampling distribution of the mean body temperature for an SRS of 50 adults. c. Find the probability that the mean body temperature of an SRS of 50 adults is between 98F and 99F.

3. Why is the standard deviation of a sampling distribution smaller than the standard deviation of the population?