Answer:
C. 3
Step-by-step explanation:
Given expression is:
We know that the rules of exponents are used to solve these kind of questions.
When there is exponent on exponent like in this question 1/7 has an exponent of 7 , the exponents are multiplied.
So,
The 7's will be cancelled out and remaining power will be 1
Hence, option C is correct ..
Answer:
Now we can find the p value based in the alternative hypothesis and we got:
Step-by-step explanation:
Information given
represent the sample mean
represent the population standard deviation
sample size
represent the value to verify
z would represent the statistic
represent the p value
System of hypothesis
We want to verify if the true mean for this case is 64 or no, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
The statistic is given by:
(1)
The statistic for this case is given by:
Now we can find the p value based in the alternative hypothesis and we got: