A population has a mean of 4.5, with a standard deviation of 1. A sample of 50 items from that population has a mean of 5, with a standard deviation of
1.1.
Which equation describes the point estimate?
A. X = 4.5
B. u = 5
C. u = 4.5
D. X = 5

16 more than the product of 5 and p

Ineed with angles and the measure of them i have abc a is 65 and b is (3x-10) and c is (2x) find the value of x

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?