Answer:
t Subscript alpha divided by 2 = 2.921
Step-by-step explanation:
With sample sizes lower than 30, we use the t-test.
Otherwise, we use the z-test.
Here, n = 17
So we use the t-test.
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 = 17 - 1 = 16
Now, we have to find a value of T, which is found looking at the t table, with 16 degrees of freedom(y-axis) and a confidence level of 0.99(
). So we have T = 2.921
So the correct answer is:
t Subscript alpha divided by 2 = 2.921
Answer:
D.
Step-by-step explanation:
See attached photo.
First change the fraction to percent.
3/4 = 60%
Then change the percent to the decimal.
60% = 0.75
Now multiply it.
<span>0.75 x 60% = 45
</span>
45 is the answer.
Answer:
She can buy 25 boxes of pasta with $65
Step-by-step explanation:
This question is actually very easy if you forget about all of the unnecessary information. They throw a lot of unnecessary information like they telling you that there are 12 ounces of pasta in each box. You never need that information. My point is that watch out for unnecessary info. Other than that, you can simply multiply 13 (price of 5 boxes) by 5 and get 65. That means that just multiply 5 by 5 and you will see that she can buy 25 boxes of pasta with $65.
