Answer:
2100
Step-by-step explanation:
Question 3. the answer is 18
4. the answer is 3x+3y
Answer:
The null hypothesis would say that class size has no effect on students learning.
Step-by-step explanation:
Null hypothesis is a type of hypothesis that is used in statistics which proposes that there is no difference between a certain characteristic of a population or the data - generating process.
Now, in this question,the school district is considering increasing class size in the elementary schools but we want to check whether larger classes may have a negative effect on students learning.
Thus, the null hypothesis would reject this claim of larger classes having negative effect on students and say that class size has no effect on students learning.
Answer:
E
Step-by-step explanation:
i guess the dotted lines outline a square
so get the area of the square which is 6×6=36
then don't focus on the shaded part but unshaded you'll see two right angled triangles

you will get a total for both as 21
then get the area of the square 36-21=15
so the area becomes 15
Answer: 0.4207
Step-by-step explanation:
Let
be the sample mean area.
Given: Population mean :
sq. feet
Standard deviation:
sq. feet
Sample size : n= 10
The probability that the sample mean area is
or less if the manufacturer’s claim is true.

Required probability = 0.4207