Question

2. A population is known to have a standard deviation of 26.1. A sample space of 35 items has a mean of (1 point) 562. Construct a 90% confidence interval estimate of the mean of the population. 0566<p<558 0555<pバ569 O 551<H573 0561<p<563 3. While researching the cost of school lunches per week across the state, you use a sample size of 45(point) weekly lunch prices. The standard deviation is known to be 68 cents. In order to be 90% confident, what is the margin of error in units of dollars? O 0.1987 89.7685 O 0.1668 O0.0249 4. A simple random sample of the weight of 40 women has a mean of 146.22 lb. Research from other (1 point) sources suggests that the population standard deviation of weight of women is 30.86 lb. Find a 95% confidence interval estimate of the mean weight of all women. 141.58 lb sH<150.86 lb 138.19 lb <y< 154.25 lb 132.11 lbu160.33 Ib 136.66 lb155.78b 5. Use the given information to construct a 99% confidence interval estimate of the mean of the population. (1 point n-39, σ . 3.86,天-41.7 40.1<p<43.3 0.5 42. 41.4 < 42.0

Answer 1