Using the t-distribution, it is found that the 99% confidence interval for the difference is (0.058, 3.462).
We are given the <u>standard deviation for the samples</u>, hence, the t-distribution is used to solve this question.
The standard errors are given by:


For the distribution of differences, the <u>mean and the standard error</u> are given by:


The interval is given by:

The critical value for a <u>two-tailed 99% confidence interval</u> with 18 + 18 - 2 = <u>34 df</u> is t = 2.7284.
Then:


The 99% confidence interval for the difference is (0.058, 3.462).
For more on the t-distribution, you can check brainly.com/question/16162795
If you would like to calculate (a + 1) * (a + 2) - (a + 1) * (a - 2) - a - 1, you can do this using the following steps:
(a + 1) * (a + 2) - (a + 1) * (a - 2) - a - 1 = a^2 + 2 * a + 1 * a + 2 - (a^2 - 2 * a + 1 * a - 2) - a - 1 = a^2 + 3 * a + 2 - a^2 + 2 * a - 1 * a + 2 - a - 1 = 3 * a + 3
The correct result would be 3 * a + 3.
Answer:
4691.74
Step-by-step explanation:
A = P(1 + r/n)^nt
= 2300(1 + .08/4)^(4 * 9)
= 2300(1.02)³⁶
= 2300 * 2.039887
= 4691.74
Step-by-step explanation:
the graph A is represents the ordered pairs.
Answer:
2
Step-by-step explanation: