Three degree angle measures of a triangle are given.
does the triangle exist in euclidean geometry, spherical geometry, or neither?
1. 115, 37, 160
2. 52, 19, 23
3. 71, 90, 19
4. 108, 120, 68

Arandom sample of 45 observations results in a sample mean of 68. the population standard deviation is known to be 23 a. compute the margin of error at a 959% confidence interval. b. compute the 95% confidence interval for the population mean c. compute the 90% confidence interval for the population mean. d. compute the 75% confidence interval for the population mean