Exhibit 8-5
A random sample of 64 SAT scores of students applying for merit scholarships showed an average of 1400 with a standard deviation of 240.
-Refer to Exhibit 8-5. The "t" value for this interval estimation is
A)1.96
B)1.998
C)1.64
D)1.28

Question

Quizplus · Accepted Answer

The sample size is 64, so the degrees of freedom are 63. The confidence level is 95%, so the t-value is 1.998.

Exhibit 8-5 A Random Sample of 64 SAT Scores of Students Applying