Answer:
b. The student's scores on the posttest would have a smaller standard deviation.
Step-by-step explanation:
The first test is taken before the material is covered in class so we expect the standard deviation to be high because not everyone's scores would be lying close to the mean. Equal number of students mastered most, some or almost none of the material from reading the textbook based on the pretest result. this means the data is varying, so the standard deviation is large.
Whereas, after the teacher has taught the material and given the homework, they must have understood most of the material. The test they take after teaching as a post test. The results of the post test would have a smaller standard deviation as most of the students would have scored good. Hence, the student's scores on the posttest would have a smaller standard deviation.
Answer:
355.2
Step-by-step explanation:
Given:
Four percent of Jennie's skin cells were burned
Total skin cells having Jennie = 3.7 x 10^10
= 
To find:
How man skin cells were not burned ?
Solution:
Total skin cells having Jennie = 370
Percent of Jennie's skin cells were burned = 4%
Skin cells burned from a fire = 
= 
= 
Remaining skin cells which not burned = 370 - 14.8 = 355.2
Therefore, 355.2 skin cells were not burned.
D. 32/47
You would subtract 1580 from 640 to get 940. You would then simplify 640/940 to get 32/47.
Answer:
150 degrees
Step-by-step explanation:
I just answered it on edginuty
