question archive A) A simple random sample of five basketball players is selected
A) A simple random sample of five basketball players is selected
Subject:StatisticsPrice: Bought3
A) A simple random sample of five basketball players is selected. Their heights (in centimeters) are 170, 175, 169, 183, and 177. What is the standard error of the mean of these height measurements?
Answer is 2.538 must show calculations.
B) The proportion of students who own a cell phone on college campuses across the country has increased tremendously over the past few years. It is estimated that approximately 90% of students now own a cell phone. Fifteen students are to be selected at random from a large university. Assume that the proportion of students who own a cell phone at this university is the same as nationwide. Let X = the number of students in the sample of 15 who own a cell phone. What is the probability that all students in a simple random sample of 15 students own a cell phone?
Answer is 0.206 must show calculations.
