![subject](/tpl/images/cats/mat.png)
Mathematics, 15.04.2021 18:10 jaimejohnston2
An educational psychologist wishes to know the mean number of words a third grader can read per minute. She wants to ensure that the estimate has an error of at most 0.3 words per minute. A previous study found that the mean was 40.2 words per minute. Assuming that the variance is 15.21, what is the minimum number of third graders that must be included in a sample to construct the 80% confidence interval? Round your answer up to the next integer.
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Mathematics
![image](/tpl/images/cats/mat.png)
Mathematics, 20.06.2019 18:04, rhiannonwheatcr4468
Factor the polynomial 8y^2 - 72 btw "^" means exponent
Answers: 3
![image](/tpl/images/cats/mat.png)
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 15:40, chaparro0512
If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes
Answers: 3
You know the right answer?
An educational psychologist wishes to know the mean number of words a third grader can read per minu...
Questions in other subjects:
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/informatica.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/istoriya.png)
History, 22.07.2019 10:00