1. For the following curves A, B, and C determine the mean µ and the standard deviation
|Curve||Mean µ||standard deviation σ|
2. Twelve fruit bats from the lagoon islands of Chuuk state were measured and found to have a mean skull length µ of 44.708 mm with a standard deviation σ of 0.593 mm. Presume that the distribution of skull lengths is normally distributed about the mean.
|Statistic or Parameter||Symbol||Equations||Excel|
|Calculate a z value from an x||z||=||=STANDARDIZE(x, µ, σ)|
|Calculate an x value from a z||x||= z * σ + µ||= z*σ+µ|
|Find a probability p from a z value (the area to the left of z)||=NORMSDIST(z)|
|Find a z value from a probability p (from the area p to the left of z)||=NORMSINV(p)|