Answer Happy

Question 16 Male heights are normally distributed with a mean of 70 inches and standard deviation 2. Female heights are normally distributed with a mean of 64 and standard deviation 25. Who is shorter relative to their gender? A 68 inch tall male, or a 62 inch tall female? How do you know? The male and the female have the same z-score, so they are both equally short relative to their gender. B The 62 inch tall female is shorter relative to her gender because her 2 score is farther away from 0. The male and the female are both 2 inches shorter than the mean, so they are equally short relative to their gender The 68 inch tall male is shorter relative to his gender because his z-score is farther away from 0.

Question 17 Body temperatures are normally distributed with a mean 98.6 degrees and a standard deviation of 0.2 degrees. What percentage of people have a body temperature above 98.9 degrees? Enter your answer as a decimal rounded to 4 decimal places. Add your answer

Question 18 Body temperatures are normally distributed with a mean of 98.6 degrees and a standard deviation of 0.2 degrees. If a simple random sample of n=100 people is selected, and their sample mean body temperature calculated, what is the standard deviation for this sample mean (also called "standard error")? Enter your answer as a decimal rounded to 2 decimal places, Add your answer

Question 19 Body temperatures are normally distributed with a mean 98.6 degrees and a standard deviation of 0.2 degrees. For a random sample of n=100 people, what is the probability that their sample mean body temperature will be less than 98.567 Enter your answer as a decimal rounded to 4 decimal places. Add your answer

Question 20 What does "95% confidence" mean for a confidence interval? А If we took many samples and calculated a 95% confidence interval each time, about 95% of the intervals would contain the population parameter. If we took many samples and calculated a 95% confidence interval each time, about 95% of the intervals would contain the sample statistic The confidence interval is within 95% of the sample statistic. The confidence interval is within 95% of the population parameter.