1. The adult male striped skunk population in southern California has the follow

Question

1. The adult male striped skunk population in southern California has the following population parameters for skull width: = 53 mm; = 7.5 mm. Assuming that skull widths are normally distributed, what proportions of the population has skull widths: a.Less than 58 mm? b. Greater than 54 mm? c. Equal to 50 mm? d. Between 48 and 52 mm, inclusive? The female skunks of this same population (Problem 17) have a mean skull width of = 47.5mm. 2. What proportion of the population should have skull widths between 48 and 52mm, inclusive? a. What proportion of the males (= 53mm) should be greater than (or equal to) the mean of the female skulls? c. What proportion of the females (4 -47.5mm) should have skull lengths greater than (or equal to) the mean for the males?

Explanation / Answer

1. a) P (x<58) = 0.7475

b)P (x>54) =0.447

c) P (x=50)=0

d) P (48<x<52) = 0.1945

2.Does not have standard dev.

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