The distributions of systolic and diastolic blood pressures for female diabetics between ages 30 and 34 have unknown means. However, their standard deviations are 11.8 mmHg and 9.1 mmHg, respectively.
1) Interpret the 95% confidence interval.
2) The mean diastolic blood pressure for the sample size of 10 is 84 mmHg. Find a two-sided 90% confidence interval for mean d, the true mean diastolic blood pressure of the population.
3) Calculate a two-sided 99% confidence interval for mean d.