hen constructing a confidence interval, a larger sample will ___ the margin of error and the confidence interval will be _____ A. decrease, narrower B. increase; narrower C. Decrease, wider D. increase; wide

Find the margin of​ error, using a​ 95% confidence​ level, for estimating the percentage of all young people who earned a high school diploma. ____?

Which of the following statements is correct about confidence intervals? A. Higher confidence levels result in narrower confidence intervals. B. Higher confidence levels result in lower standard error of the mean. C. The goal of constructing a confidence interval is to estimate the population mean from the sample mean. D. Both A and C.

A survey asked, "How many tattoos do you currently have on your body?" Of the 1241 males surveyed, 182 responded that they had at least one tattoo. Of the 1047 females surveyed, 139 responded that they had at least one tattoo. Construct a 99% confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval. P1 Let p, represent the proportion of males with tattoos and p, represent the proportion of females with tattoos. Find the 99% confidence interval for p, - p2. The lower bound is The upper bound is (Round to three decimal places as needed.)

Construct a 90% confidence interval of the population mean age for the college students in Example #5 with the sample size increased to 30 students. Compare your answer with Example #5 (picture). a. Identify n, x̅, ?, and zc, and find E.b. Find the left and right endpoints of the confidence interval.c. Interpret the results and compare them with Example #5.

At one large college, 1867 out of the 2500 students surveyed said they plan to take another science class.Find the 95% confidence interval for the proportion of students that said they plan to take another science class.  ?   %  to   ? %

A 95% confidence interval is constructed in order to estimate the proportion of adults who own an iPhone. The resulting interval has a margin of error of 0.043. Which of the following would be the margin of error for a 90% confidence interval based on the same sample of data?

statistics practitioner took a random sample of 48 observations from a population whose standard deviation is 23 and computed the sample mean to be 100.   Note: For each confidence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the confidence limits.   A. Estimate the population mean with 95% confidence.   Confidence Interval =  B. Estimate the population mean with 95% confidence, changing the population standard deviation to 47;   Confidence Interval =  C. Estimate the population mean with 95% confidence, changing the population standard deviation to 10;   Confidence Interval =

Use the data attached: 1. In two to three sentences, explain what a confidence interval means(in general), as if you were talking to someone who has not taken statistics. 2. In one to two sentences, explain what this confidence interval means for this particular study.

Person 1 Person 2 Person 3 Person 4 Person 5 Person 6 Person 7 Person 8 Person 9 Height (inches) 75 62 64 63 62 70 69 70 67 Weight (lbs) 325 250 280 220 235 265 200 365 175 (CLO 1) Construct a confidence interval to estimate the mean height and the mean weight.