Answer: 1.282
Step-by-step explanation:
Given : Significance level : 
The alternative hypothesis :
, which is left tail-ed , it means the test is left -tailed test i.e. one -tailed test.
By using the standard normal distribution table , we have
The critical value for a one-mean z-test corresponding to the significance level 0.10 is 1.2815515 or approximately 1.282
Hence, the critical value or values for a one-mean z-test at the 10% significance level if the hypothesis test is left-tailed = 1.282
Answer:
If you say that the number is called N,
then "12 more than a number" for us means 12 more than N
And in math "more than" usually means you are adding.
So 12 more than N would be 12 + N
Step-by-step explanation:
Question # 1
Step-by-step Explanation:
Given

solving









Therefore, completing the blanks:

Question # 3
Step-by-step Explanation:
Given

solving









Therefore, completing the blanks:

Question # 5
Step-by-step Explanation:
Given

solving









Therefore, completing the blanks:

Answer: it is c
Step-by-step explanation: