6.167 High School Graduates. According to the document Cur-rent Population Survey, published by the U. S. Census Bureau, 30.4% of U. S. adults 25 years old or older have a high school degree as their highest educational level. If 100 such adults are selected at random, determine the probability that the number who have a high school degree as their highest educational level is

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determine the probability that the number who have a high school degree as their highest educational level is exactly 32

answer : P( x = 32 ) = 0.08

Step-by-step explanation:

Given ;

n = 100 , p = 0.304

np = 100 * 0.304 = 30.4

n( 1 - p ) = 100 ( 1 - 0.304 ) = 69.6

applying normal approximation to the Binomial to determine mean value and standard deviation ( because:  np and n(1-p)  > 5 )

mean = np = 30.4

std = = = 4.6

Determine the probability of exactly 32

P( X = 32 ) = P( 31.5 < X < 32.5 )

                 = P( (31.5 - 30.4) / 4.6  < X  < (32.5 - 30.4) / 4.6 )

                 = P ( 0.24 < Z < 0.46 )

                 = p( Z < 0.46 ) - p( Z< 0.24 )   ( using standard tables )

                 = 0.6772 - 0.5948 = 0.0824  ≈ 0.08

what? ?

what type of question is thiss

step-by-step explanation:

∠cbe and ∠deb are same-side interior angles.

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