P(
> 40.3)
= P((
-
)/(
)
> (40.3 -
)/(
))
= P(Z > (40.3 - 39)/(2/))
= P(Z > 2.91)
= 1 - P(Z < 2.91)
= 1 - 0.9982
= 0.0018
Since the probability value is less than 0.05, so it is unusual.
Get Answers For Free
Most questions answered within 1 hours.