One-Sample T
Test of μ = 3.5 vs ≠ 3.5

 N   Mean  StDev  SE Mean      95% CI         T      P
45  4.000  1.000    0.149  (3.700, 4.300)  3.35  0.002

One-Sample Z
Test of μ = 3.5 vs ≠ 3.5
The assumed standard deviation = 6.633

 N   Mean  SE Mean      95% CI         Z      P
45  4.000    0.989  (2.062, 5.938)  0.51  0.613