Experience has shown that 20% of all persons afflicted by a certain illness recover. A drug company has developed a new medication. Ten people with the illness were selected at random and received the medication. Suppose that the medication was absolutely worthless. Let X be the number of patients who recovered from the illness. Compute the following descriptive measures. Round off answers to the nearest hundredths (two decimal places). Out of ten people with the illness, compute for the expected number of patients who will recover: E(X)= Compute for the variance of the random variable X: V(X)=  Compute for the standard error of the random variable X: SE(X)=

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Experience has shown that 20% of all persons afflicted by a certain illness recover. A drug company has developed a new medication. Ten people with the illness were selected at random and received the medication.

Suppose that the medication was absolutely worthless. Let X be the number of patients who recovered from the illness.

Compute the following descriptive measures. Round off answers to the nearest hundredths (two decimal places).

  1. Out of ten people with the illness, compute for the expected number of patients who will recover: E(X)=
  2. Compute for the variance of the random variable X: V(X)= 
  3. Compute for the standard error of the random variable X: SE(X)= 
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