Mathematics, 02.12.2020 17:10 Shaynele
A professor at a university wants to estimate the average number of hours of sleep the students get during exam week. The professor wants to find a sample mean that is within 4.266 hours of the true average for all college students at the university with 99% conconfidence. If the professor knows the standard deviation of the sleep times for all college students is 2.539, what sample size will need to be taken
Answers: 1
is
![n = [\frac{Z_{\frac{\alpha }{2} } * \sigma }{E} ] ^2](/tpl/images/0941/6160/a50a9.png)
![n = [\frac{2.58 * 2.539 }{4.266} ] ^2](/tpl/images/0941/6160/ea170.png)
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 18:00, jeffylovesgreenbeans
Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.
Answers: 1
Mathematics, 21.06.2019 19:50, claytonp7695
Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?
Answers: 1
You know the right answer?
A professor at a university wants to estimate the average number of hours of sleep the students get...
Questions in other subjects:
History, 12.12.2020 15:50
History, 12.12.2020 15:50
Mathematics, 12.12.2020 15:50
Mathematics, 12.12.2020 15:50
Advanced Placement (AP), 12.12.2020 15:50
