Answer:
t = –3.382
Step-by-step explanation:
Claim: FICO credit scores are greater than 675
Thus, x = 675
We are given:
Sample size = n = 50
Sample Mean = u = 719
Sample Standard deviation = s = 92
The formula to find the t-statistic is:
[tex]t=\frac{x-u}{\frac{s}{\sqrt{n} } }[/tex]
Using the above values, we get:
[tex]t=\frac{675-719}{\frac{92}{\sqrt{50} } }\\\\ t=-3.382[/tex]
Thus, the value of test statistic is -3.382. So 3rd option gives the correct answer.
