Answer:
Step-by-step explanation:
Given that a professor sets a standard examination at the end of each semester for all sections of a course. The variance of the scores on this test is typically very close to 300.
(Two tailed test for variance )
Sample variance =480
We can use chi square test for testing of hypothesis
Test statistic =
p value = 0.0100
Since p <0.05 our significance level, we reject H0.
The sample variance cannot be claimed as equal to 300.
Answer:
b
Step-by-step explanation:
so 17 squared minus 8 squared is 225. the square root of 225 is 15
First, multiply by 3 on both sides:
Divide by 7:
So,
k = 9
Answer:
0, -2
Step-by-step explanation:
Can I have brainliest? I hope this helped and have a nice day!
0.24/.012 Answer= 20
You just divide the .24 by .012