Answer: Its B
Step-by-step explanation:
Using the t-distribution, it is found that the value of the test statistic is t = -87.3.
At the null hypothesis, it is <u>tested if the mean is of 2,463 square feet</u>, that is:

At the alternative hypothesis, it is <u>tested if the mean is smaller</u>, that is:
.
We have the <u>standard deviation for the sample</u>, hence, the <em>t-distribution</em> is used to solve this question.
The test statistic is given by:
The parameters are:
is the sample mean.
is the value tested at the null hypothesis.
- s is the standard deviation of the sample.
The values of the <em>parameters </em>are:
.
Hence, the value of the <em>test statistic</em> is:



To learn more about the t-distribution, you can take a look at brainly.com/question/25819230
Answer:
(10,0)
Step-by-step explanation:
4x - 5y = 40
To find the x intercept, set y =0 and solve for x
4x - 0 = 40
4x= 40
Divide by 4
4x/4 = 40/4
x = 10
The x intercept is 10
(10,0)
I recommend you use google because these are very easy
Answer: 70.1
Step-by-step explanation: