Answer:
<u>B. There is sufficient evidence that the mean of the pressure required to open a certain valve has changed. </u>
Step-by-step explanation:
We make this conclusion based on these reasons:
- We are told that the "null hypothesis was rejected" after the <em>"manager feels that the pressure variability has changed.,</em> meaning the <u>null hypothesis was the opposite of what occurred; that is to say, it is the alternate hypothesis that proved true instead.</u>
- <em>"changes in the manufacturing process"</em> form what can be called "sufficient evidence" that the mean of the pressure required to open the valve has changed, thereby going against the null hypothesis.
It is based on the above reasons that the null hypothesis was rejected.
Answer:
18.5185%
Step-by-step explanation:
(7/27) * 100% = (0.185185) * 100% = 18.5185%
Answer:
Option C. His answer is not correct, because the same can not be less than either attend
Step-by-step explanation:
we have
we know that
substitute
----> is not true
therefore
His answer is not correct, because the same can not be less than either attend
Answer:
1.) There are twice as many girls as there are boys in a sixth grade class.
2.) There are half as many boys as there are girls in a sixth grade class.
Answer:
5040 different combinations
Step-by-step explanation:
0-9 = 10 numbers
1st digit can be 1 0f 10
2nd digit can be 1 of 9
3rd digit can be 1 of 8
4th digit can be 1 of 7
10×9×8×7=5040
