Mathematics, 20.04.2020 21:29 ThatOneGuy8144
After a month-long survey, you collect 146 responses. You found that 83% of the customers indicated the life of the motor is greater than 10 years. You would like to understand what proportion of the motors last longer than 10 years. How many surveys would you need to collect in total in order to obtain a margin of error of /- 5% with 89.9% confidence
Answers: 2
![n=[\frac{z_{\alpha/2}\times \sqrt{\hat p(1-\hat p)}}{MOE}]^{2}](/tpl/images/0612/9501/cffa1.png)
![=[\frac{1.64\times \sqrt{0.83(1-0.83)}}{0.05}]^{2}](/tpl/images/0612/9501/b3779.png)
Another question on Mathematics
Mathematics, 20.06.2019 18:04
The sum of the product of 4 and x and the product of 7 and y is 61. the sum of the product of 12 and x and the product of 21 and y is 61. what are the values of x and y?
Answers: 1
Mathematics, 21.06.2019 23:50
Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.
Answers: 3
You know the right answer?
After a month-long survey, you collect 146 responses. You found that 83% of the customers indicated...
Questions
Mathematics, 13.11.2021 06:20
Mathematics, 13.11.2021 06:20
Physics, 13.11.2021 06:20
Physics, 13.11.2021 06:20
English, 13.11.2021 06:20
Biology, 13.11.2021 06:20
History, 13.11.2021 06:20
Biology, 13.11.2021 06:20
Mathematics, 13.11.2021 06:20
Mathematics, 13.11.2021 06:20
Social Studies, 13.11.2021 06:20
