![subject](/tpl/images/cats/mat.png)
Mathematics, 16.04.2020 02:56 ohshushan2
There is a government-sponsored study of student achievement in large urban school districts. They give a reading test scored from 0 to 500. A score of 232 is a "basic" reading level and a score of 270 is "proficient." Scores for a random sample of 1400 eighth-graders in a city had x = 237 with standard error 1.0.
We don't have the 1400 individual scores, but use of the t procedures is surely safe. Why?
A. Test scores are always normally distributed.
B. A random sample should be normally distributed.
C. The sample size is very large, so the only potential hazard is extreme skewness.
D. A small sample size of a simple random sample should be normally distributed.
![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 16:00
Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost.swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:30
The function show two sisters' savings account and the rate at which they plan to deposit money
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:30
You have a square piece of cardboard that measures 14 inches on each side. to build a box, you cut congruent squares out of each corner of the cardboard. use the picture to find the area of the cardboard you were used to build the box
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:30
Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour.what is the cyclist average rate for the round trip in miles per hour ?
Answers: 1
You know the right answer?
There is a government-sponsored study of student achievement in large urban school districts. They g...
Questions
![question](/tpl/images/cats/himiya.png)
Chemistry, 07.12.2021 16:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 07.12.2021 16:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 07.12.2021 16:30
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 07.12.2021 16:30
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 07.12.2021 16:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 07.12.2021 16:40
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 07.12.2021 16:40
![question](/tpl/images/cats/mat.png)
Mathematics, 07.12.2021 16:40
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/istoriya.png)
History, 07.12.2021 16:40