Mathematics, 23.04.2020 01:32, yannabby26
A marketing researcher for a phone company surveys 130 people and finds that the proportion of customers who are likely to switch providers when their contract expires is 12%. Complete parts a) and b) below. a) What is the standard deviation of the sampling distribution of the proportion? SD (ModifyingAbove p with caret )equals nothing (Round to four decimal places as needed.) b) If she wants to reduce the standard deviation by half, how large a sample would she need? nequals nothing (Type a whole number.)
Answers: 3
Mathematics, 21.06.2019 18:20, nehaljay1883
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%
Answers: 1
Mathematics, 21.06.2019 19:30, woodfordmaliky
Louis wants to carpet the rectangular floor of his basement. the basement has an area of 864 square feet. the width of the basement is 2/3 it's length. what is the length of louis's basement
Answers: 1
Mathematics, 21.06.2019 23:00, ronaldotheexplorer12
The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?
Answers: 3
A marketing researcher for a phone company surveys 130 people and finds that the proportion of custo...
Mathematics, 12.10.2020 14:01
History, 12.10.2020 14:01
Mathematics, 12.10.2020 14:01
Spanish, 12.10.2020 14:01
Chemistry, 12.10.2020 14:01