A sample of size n= 96 is drawn from a normal population whose standard deviation is o = 7.8. The sample mean is x = 49.32. Part 1 of 2 (a) Construct a 99% confidence interval for u. Round the answer to at least two decimal places. A 99% confidence interval for the mean is LE Part 2 of 2 (b) If the population were not approximately normal, would the confidence interval constructed in part (a) be valid? Explain.

The 99% confidence interval on a population mean computed with a sample of size 36 and sample mean 1.4 is computed knowing that the standard deviation of this population is 0.3.  The margin of error for this confidence interval is about

A sample of size n=89 is drawn from a population whose standard deviation is a 16. Part 1 of 2 (a) Find the margin of error for a 90% confidence interval for μ. Round the answer to at least three decimal places. The margin of error for a 90% confidence interval for μ is. Part 2 of 2 (b) If the sample size were n=87, would the margin of error be larger or smaller? (Choose one) , because the sample size is (Choose one)

A sample of size n=79 Is drawn from a population whose standard deviation is o = 29, Part 1 of 2 (a) Find the margin of error for a 90% confidence interval for l. Round the answer to at least three decimal places. The margin of error for a 90% confidence interval for u is Part 2 of 2 (b) If the sample size weren=44, would the margin of error be larger or smaller? (Choose one) ▼ because the sample size is (Choose one) Larger Smaller

A random sample of n1n1  = 235 people who live in a city were selected and 79 identified as a "dog person." A random sample of n2n2  = 93 people who live in a rural area were selected and 67 identified as a "dog person." Find the 99% confidence interval for the difference in the proportion of people that live in a city who identify as a "dog person" and the proportion of people that live in a rural area who identify as a "dog person." Round answers to to 4 decimal places. < p1−p2<

Say we have a population parameter, and the 95% confidence interval for it is (-3, 10). Do you have evidence to conclude that the parameter is less than 11? Yes No