I I need help with finding the mean of all sample proportions!! 250 200 150 100

Question

I

I need help with finding the mean of all sample proportions!!

250 200 150 100 50 0.000 Orange M&Ms; Simulation Enter values in orange cells only. Proportions should be in decimal form. Enter Blue M&Ms; Population Proportion p and n below. Orange Proportion, p Other colors (1-p) 0.200 0.800 Standard dev. of sample proportions: 0.090 (the estimated standard error) Press [F9] to regenerate (or [CMD]+ on a Mac Orange M&Ms; Sample Proportion Frequencies 0.100 0.200 0.400 0.300 0.500 0.600 0.700 0.800 1000 sample proportions randomly generated accordingto the binomial distribution. 0.900 1.000

Explanation / Answer

We have been given the following info:

p = .2

n=20

The standard error for proportions is calculated by sqrt( p*(1-p)/n) = sqrt(.2*.8/20) = .089

The sample mean of all proportions is n*p = .2*20 = 4

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