Answer:

Step-by-step explanation:
Given

Required
Determine the test statistic
Let the dataset of stick be A and Liquid be B.
We start by calculating the mean of each dataset;

n, in both datasets in 6
For A



For B



Next, calculate the sample standard deviation
This is calculated using:

For A




For B




Calculate the pooled variance




Lastly, calculate the test statistic using:

We set

So, we have:


The equation becomes




<em>The test statistic is 31.29</em>
Answer:
21/25 = 84/100
17/20 = 85/100
21/25 < 17/20
Step-by-step explanation:
∵ The common multiple of 25 and 20 is 100
∵ 100 ÷ 25 = 4
∴ 21/25 = (21 × 4)/(25 × 4) = 84/100
∵ 100 ÷ 20 = 5
∴ 17/20 = (17 × 5)/(20 × 5) = 85/100
∵ 84 < 85
∴ 84/100 < 85/100
∴ 21/25 < 17/20
Answer:
the answer is 48
Step-by-step explanation:
Use the equation I/PT = R I is the interest P is the money before investment and T is the time