Answer:
The critical value for a 99% confidence interval is T = 2.9768
Step-by-step explanation:
We have the standard deviation of 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 = 15 - 1 = 14
Critical value
Now, we have to find a value of T, which is found looking at the t table, with 14 degrees of freedom(y-axis) and a confidence level of . So we have T = 2.9768
The critical value for a 99% confidence interval is T = 2.9768
The first and last one are true!
You are referring to:
You can solve your problem by calculating
and then subtracting the first bit:
So 138075 - 190 = 137885
Answer:
s = 4
Step-by-step explanation:
Given
3r = 10 + 5s ← substitute r = 10
3 × 10 = 10 + 5s
30 = 10 + 5s ( subtract 10 from both sides )
20 = 5s ( divide both sides by 5 )
4 = s
Answer:
A.) Increasing
Step-by-step explanation:
I hope this helps you :)