Question

Use the following information to find the test statistic of the sample used to test the claim that FICO credit scores are greater than 675. n = 50, = 719, s = 92
t = 32.437


t = –32.437


t = –3.382


t = 3.382

Answer 1

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:

$t=\frac{x-u}{\frac{s}{\sqrt{n} } }$

Using the above values, we get:

$t=\frac{675-719}{\frac{92}{\sqrt{50} } }\\\\ t=-3.382$

Thus, the value of test statistic is -3.382. So 3rd option gives the correct answer.

Answer 2

Answer:

t = 3.382

Step-by-step explanation:

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