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8 Cards in this Set
- Front
- Back
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What is a Type 1 error? |
When you reject H0 but H0 is actually true. The probability of a type 1 error is the same as the actual significance level. |
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What is a Type 2 error? |
When you accept H0, but H0 is actually false. |
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How can E(X) be denoted using probability? |
ÊxP(X=x) |
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What is the variance of X? |
Var(X)= E((X-E(X))²) |
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What is the mean and variance of a negative binomial distribution with parameters r and p. |
E(X)= r/p Var(X)= r(1-p)/p² |
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What is the mean and variance of a geometric distribution? |
E(X)=1/p. Var(X)=(1-p)/p² |
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What is the formula for P(X≥x) and P(X≤x) for a geometric distribution? |
P(X≥x)=(1-p)^x-1
P(X≤x)=1-(1-p)^x |
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How do you find z when Z=X+Y? |
Gz(t)=Gx(t)×Gy(t) |
