A survey of nonprofit organizations showed that online fundraising has

A survey of nonprofit organizations showed that online fundraising has increased in the past year. Based on a random sample of 55 nonprofits, the mean one- time gift do-nation in the past year was $ 75, with a standard deviation of $ 9.,a. Construct a 95% confidence interval estimate for the population mean one- time gift donation.,b. Interpret the interval constructed in (a).