A research center survey of 2,380 adults found that 1,945 had bought something online. Of these online shoppers, 1,209 are weekly online shoppers. Complete parts (a) through (c) below. BEKER a. Construct a 95% confidence interval estimate of the population proportion of adults who had bought something online. SIS (Round to four decimal places as needed.) b. Construct a 95% confidence interval estimate of the population proportion of online shoppers who are weekly online shoppers. SxS (Round to four decimal places as needed.) c. How would the director of e-commerce sales for a company use the results of (a) and (b)? OA. A greater proportion of adults have purchased something online, but those adults who are weekly online shoppers make larger purchases, so the director of e-commerce sales may want to focus on those adults who are weekly online shoppers. OB. Since a greater proportion of adults have purchased something online than are weekly online shoppers, the director of e-commerce sales may want to focus on those adults who have purchased something

Please help me solve: A. how many subjects have at least one Rx B. construct a 99% confidence interval

In a survey of 3116 adults aged 57 through 85​ years, it was found that 86.2​% of them used at least one prescription medication. Complete parts​ (a) through​ (c) below. a. How many of the 3116 subjects used at least one prescription​ medication? b. Construct a​ 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication. c. What do the results tell us about the proportion of college students who use at least one prescription​ medication?     A. The results tell us that there is a​ 90% probability that the true proportion of college students who use at least one prescription medication is in the interval found in part​ (b).   B. The results tell us​ that, with​ 90% confidence, the probability that a college student uses at least one prescription medication is in the interval found in part​ (b).   C. The results tell us​ that, with​ 90% confidence, the true proportion of college students who use at…

In a survey of 3213 adults aged 57 through 85​ years, it was found that 83.9​% of them used at least one prescription medication. Complete parts​ (a) through​ (c) below. a. how many of the 3213 subjects used at least one prescription medication?  b. construct a 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication. c. what do the results tell us about the proportion of college students who use at least one prescription medication?