1. As studied, the average number of hours spent by senior high school students for their online classes a week is 25 hours with a standard deviation of 4 hours. Assuming that the study is true and the data is normally distributed. A. Find the probability that a randomly selected senior high school student spends more than 26 hours but less than 29 hours. B. Find the probability that a randomly selected senior high school student spends less than 21 hours or greater than 30 hours. C. Find the probability that a random sample of 12 senior high school students spends more than 24 hours.

If mZ 0- 750, which diagram represents 0 drawn in standard position? O A. O B. O C.

I need help with both A and B

Evaluate the expression using the given figure to obtain either a or B. 35 - 1 (a) tan 12 12 -1 (b) sin 37 35 (c) arccos 37 35 - 1 (a) tan 12 12 - 1 (b) sin 37 35 (c) arccos 37 ||