Answer:
Null Hypothesis:
Alternate Hypothesis:
Step-by-step explanation:
The claim made by the company should be that: Using the company's product will slow down the facial growth. According to the study, the average man's facial hair grows a half an inch per month. So, the claim of the company will be that using its product the average growth will be less than half an inch. Since, the claim contains the word "less than", it will be the alternate hypothesis.
The Null hypothesis, therefore, would be: The average growth is half an inch per month.
Let u represents the growth of facial hair growth per month. The Null and Alternate Hypothesis in symbolic forms would be:
Null Hypothesis:
Alternate Hypothesis:
Answer:
3x+7
Step-by-step explanation:
Combine x+4+2x+3. Since you are adding both g(x) and F(x).
add them up you get 3x+7.
Answer:
13
Step-by-step explanation:
9 + 1` = 10
23 - 10 = 13
Answer:
37
Step-by-step explanation:
The first thing is to calculate critical z factor
the alpha and the critical z score for a confidence level of 90% is calculated as follows:
two sided alpha = (100% - 90%) / 200 = 0.05
critical z factor for two sided alpha of .05 is calculated as follows:
critical z factor = z factor for (1 - .05) = z factor for (.95) which through the attached graph becomes:
critical z factor = 2.58
Now we have the following formula:
ME = z * (sd / sqrt (N) ^ (1/2))
where ME is the margin of error and is equal to 6, sd is the standard deviation which is 14 and the value of z is 2.58
N the sample size and we want to know it, replacing:
6 = 2.58 * (14 / (N) ^ (1/2))
solving for N we have:
N = (2.58 * 14/6) ^ 2
N = 36.24
Which means that the sample size was 37.
Answer:
Step-by-step explanation:
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