the Srinivas on 5 May 2010 · 0 commentsShare

the result of the z-example using z-score table

1 Forest trees in large measure 27 forest, which can be bought. the average he thinks of 10.4-inch diameter and a standard deviation of 4.7 inches. suppose these trees provide a detailed description of the trees and the application of the normal pattern.

a. what size would central 95% of all the trees?

(b) for the percentage of the trees must be less than an inch diameter?

c. what percentage of the trees must be between 5 and 7 inches in diameter 10.4?

d. what percentage of the trees should be more than 15 cm in diameter

(a) what would you ask the central rate of 95% of all the trees?

Since the normal distribution symmetric
We should be 0.95/2