Mathematics, 26.09.2019 15:00 queengenni
The temperature at a mountain base camp was −4 degrees celsius on saturday. sunday morning, the temperature was 2 degrees celsius lower than what it was on saturday. by sunday evening, the temperature was 1 degree celsius lower than what it was that morning. what was the temperature at the base camp sunday evening?
a. −9 degrees celsius
b. −8 degrees celsius
c. −7 degrees celsius
d. −5 degrees celsius
Answers: 2
Mathematics, 22.06.2019 04:30, RichardKing2376
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.
Answers: 1
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