WEATHER A same-day forecast of the temperature tends to be within 2.25°F of the actual temperature. The forecast for a particular day is 16°F. Let x be the actual temperature. Find the range of possible temperatures for the day when the forecast is 16°F.
(answer should be an inequality)
Please help me really quick!!!

Arandom sample of 15 observations is used to estimate the population mean. the sample mean and the standard deviation are calculated as 172 and 63, respectively. assume that the population is normally distributed. a. with 99 confidence, what is the margin of error for the estimation of the population mean? b. construct the 99% confidence interval for the population mean. c. construct the 95% confidence interval for the population mean. d. construct the 83% confidence interval for the population mean. hint: you need to use excel function =t.inv.2t to find the value of t for the interval calculation.