Asurvey of nonprofit organizations showed that online fundraising has increased
Asurvey 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 donation 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. p.s: how do i calculate the t-value in this question?