Answer:
7
Step-by-step explanation: Ok this coming from a 11 year old. if 7x3= 21 then add 4 its 25 simple
Answer:
$4.90
Step-by-step explanation:
If 5 cakes equal 3.50. We must divide 3.50 by 5 to see the price of just one cake. Now since 3.50/5 is 0.70. We must multiply 0.70 by 7. Since we have 7 cakes. Now we get our simple answer of $4.90.
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Answer: (2x-1) (2x-3)
Step-by-step explanation:
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.
the probability of making a Type I error is equal to the significance level of power. To increase the probability of a Type I error, increase the significance level. Changing the sample size has no effect on the probability of a Type I error.
The electricity of a take a look at can be expanded in a number of methods, for example increasing the pattern length, reducing the standard errors, increasing the difference between the pattern statistic and the hypothesized parameter, or growing the alpha degree.
The chance of creating a kind I mistakes is α, that's the extent of importance you put for your hypothesis check. An α of 0.05 indicates which you are inclined to accept a five% chance which you are incorrect whilst you reject the null hypothesis. To lower this risk, you have to use a decrease cost for α
Learn more about power here: brainly.com/question/1634438
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