Answer Happy

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 98.56? 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? If we took many samples and calculated a 95% confidence interval each time, about 95% of the intervals would contain the population parameter. B 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.