A simple random sample of 64 observations was taken from a large population. the sample mean and the standard deviation were determined to be 320 and 120 respectively. the estimated standard error of the mean is

16 48 Sonny substituted 5 for x in the proportion - 15 and cross multiplied to get 240 - 240. Why is this?

Express - 2 (x - y) - 10 = 0 in standard form.

Evaluate 3 (x - 4) + 2x - p2 for x = 5.

A fruit company delivers its fruit in Two types of boxes large and small a delivery of 7 large boxes and 9 small boxes has a total weight of 274 kilograms a delivery of 5 large boxes and 3 small boxes has a total weight of 141 kilograms how much

Kaitlyn missed 15% of the 20 questions on her science lab. How many questions did Kaitlyn answer correctly?

Solve. A recent advertisement claimed that 2 out of every 5 doctors recommend a certain herbal supplement to increase energy levels.

What is 4 divided by 230

Over a period of five days, the average time of a commuter train trip from one town to the city was 77 minutes. One trip was 71 minutes, another was 74, and two each were 78 minutes. How many minutes long was the fifth trip?

A 4 pound package of peanuts is divided into 1/4 pound packages. How many 1/4 pound packages will there be?

An item sells two for 66. what should 5 items