According to scientists, the cockroach has had 300 million years to develop a resistance to destruction. In a study conducted by researchers, 5,000 roaches (the expected number in a roach-infested house) were released in the test kitchen. One week later, the kitchen was fumigated and 18,486 dead roaches were counted, a gain of 13,486 roaches for the 1-week period. Assume that none of the original roaches died during the 1-week period and that the standard deviation of x, the number of roaches produced per roach in a 1-week period, is 1.3. Use the number of roaches produced by the sample of 5,000 roaches to find a 90% confidence interval for the mean number of roaches produced per week for each roach in a typical roach-infested house.

The 95% confidence interval for mean fasting blood sugar indicates that 95% of hypertensive patients in the sample had a fasting blood sugar level between enter your response here and enter your response here milligrams per deciliter.