Answer:
.
Step-by-step explanation:
Given : Sample size : n= 64 , the sample is a large sample (n>30), so we can apply z-test.
Sample mean = 
Standard deviation : 
Level of confidence:

Then, critical z-value =
The confidence interval to estimate the population mean is given by :_


Hence, the 95% confidence interval to estimate the population mean can be computed as
.
Answer:
37
Step-by-step explanation:
Answer:
its 3rd choice lol
Step-by-step explanation:
Answer:
an = -6 + n
a10 = -6+ 10 =4
Step-by-step explanation:
an should start at one behind the first number so it should be -6. Then we add whatever the sequence is increasing by, which is 1 in this case, multiplied by n.
an = -6 + n
a10 = -6+ 10 =4