Answer:
Step-by-step explanation:
We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 18 - 1 = 17
90% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 17 degrees of freedom(y-axis) and a confidence level of . So we have T = 1.74
The margin of error is:
Confidence interval:
Sample mean plus/minus margin of error. So
Answer:
When you multiply decimals, do not align the decimal points. Simply line up the numbers along the right hand side of the problem. Then multiply just as you would if the numbers were all whole numbers and add at the end.
Step-by-step explanation:
6.2 × 3.2= 19.84
62 × 32= 1984
Hope this helps:)
Answer:
a
Step-by-step explanation:
1/5^9
Answer:
A
Step-by-step explanation:
if it doesn't hit its infinite