From the table, what is the probability that a randomly selected student will be a Female OR an 11th grader. (answer as a reduced fraction)
Gender
Grade
Total
Male
Female
9
8
6
14
10
4
2
6
11
3
7
10
12
9
9
18
Total
24
24
48
34/48 reduces to 17/24
27/48
31/48
3/24 reduces to 1/8

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

Use δjkl and δmpn to determine whether don's claim is true or false. which of the following should don use to prove the triangles are similar? sss sas aas aa

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?