![subject](/tpl/images/cats/mat.png)
Mathematics, 21.01.2021 22:40 IHeartArt2555
About 217,000 high school students took the AP Statistics exam in 2017. The free-response section of the exam consisted of five open-ended problems and an investigative task. Each free-response question is scored on a 0 to 4 scale (with 4 being the best). For one of the problems, a random sample of 30 student papers yielded a mean score of x =1.267 and a standard deviation of 1.230.
a. Find and interpret the standard error of the mean.
b. Construct and interpret a 99% confidence interval to estimate the true mean score on this question.
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 13:00
Determine whether the angles in each given pair are coterminal. 744°, -336°
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 13:30
Rose drew a regression line for this paired data set. her line passed through (1, 2) and (3, 5) . what is the equation of rose's regression line?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:00
Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"
Answers: 2
![question](/tpl/images/cats/mat.png)
You know the right answer?
About 217,000 high school students took the AP Statistics exam in 2017. The free-response section of...
Questions
![question](/tpl/images/cats/istoriya.png)
History, 11.02.2020 08:26
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
Business, 11.02.2020 08:27
![question](/tpl/images/cats/mat.png)
Mathematics, 11.02.2020 08:27
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 11.02.2020 08:28
![question](/tpl/images/cats/himiya.png)
Chemistry, 11.02.2020 08:28
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.02.2020 08:28
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 11.02.2020 08:29
![question](/tpl/images/cats/en.png)
English, 11.02.2020 08:30
![question](/tpl/images/cats/biologiya.png)
Biology, 11.02.2020 08:31
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.02.2020 08:32
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 11.02.2020 08:36