Arandom sample of 150 towns in a western state had a mean annual precipitation of 2.86 inches. assume that the population standard deviation is known to be 0.78 inches. compute the 95% confidence interval for μ select one: a. 2.51 to 3.53 inches b. 2.74 to 2.98 inches c. 2.43 to 3.79 inches d. 2.31 to 3.88 inches

b. 2.74 to 2.98 inches

Step-by-step explanation:

Confidence Interval can be calculated using M±ME where

And margin of error (ME) can be calculated as

ME= where

Putting the numbers, we get:

ME= ≈ 0.1248

95% Confidence Interval would be 2.86±0.12 or 2.74 to 2.98 inches

whatever you can spend with $11.53 or under.

step-by-step explanation:

20 - 8.47 = 11.53. take away the money he used for lunch from the starting amount of 20.

b

step-by-step explanation: