An instructor delivering modules to large cohorts has computed that the grades she awards follow a normal distribution. She is eager to prove to her colleague that her approach is valid and has randomly selected grades from a 24-student sample shown below:

61 54 57 54 44 55 58 63 58 71 59 57 69 63 60 69 60 8 64 61 61 65 62 55 Determine whether the sample is normally distributed using a 0.05 level of significance. ( LO,1)