Answer:
a+9b+10
Step-by-step explanation:
use foil method
Answer: Mean-70. Standard Deviation-5.228
Step-by-step explanation:
Answer:
Initial value is 4,000
Growth is -480
Step-by-step explanation:
Initial value is the value that you started with: hence 4000.
Growth would be how much it grows, it grows downward because it is 12% down. Next you need to find what 13% of 4000 is 100%-13%=88% .88*4000=480 or 13% of 4000.
Hope this helps
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.
He walked 2,525 m per an hour.
11,040 - 920 = 10,100
10,100 / 4 = 2,525
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