Answer:
Step-by-step explanation:
i need this one too helpp
Answer:
The value of the test statistic is
Step-by-step explanation:
The null hypothesis is:
The alternate hypotesis is:
Our test statistic is:
In which X is the sample mean, is the null hypothesis value, is the standard deviation and n is the size of the sample.
In this problem:
So
The value of the test statistic is
Answer: Choice A
This is a 3 by 1 matrix, which can be written "3 x 1 matrix".
There are 3 rows and 1 column. The number of rows is listed first.