S- Ch3- Normal Distribution

Question 1

Y~N(60, 2^2)
Tom says that the median is equal to the mean.
State, with a reason, whether he is correct.

Answer 1

• normal distribution- symmetrical about mean
• so 50% of bars have (value) < mean

Question 2

Explain why a normal distribution may be an appropraite model for this sample. (1)

Answer 2

symmetrical!!