the data set represents the number of pages in the last book read by eachof 20 students over the summer. 163, 170, 171, 173, 175, 205, 220, 220, 220, 253, 267, 281, 305, 305, 305, 355, 371, 388, 402, 431. Create a histogram to represent the distribution of the data.

Describe all the numbers that when rounded to the nearest thousand are 645,000

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%

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?