1. A shipment of 7 television sets contains 2 defective sets. A hotel makes a random purchase of 3 of the sets. The foll

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1. A shipment of 7 television sets contains 2 defective sets. Ahotel makes a random purchase of 3 of the sets. The followingrepresents the probability distribution of X
X 0 1 2
P(x) 2/7 4/7 1/7
Find the mean or E (x)
Find the Variance
Find the P ( x < 2 )
2. In interpreting the Normal Quantile Plot to determine whethera distribution is Normal or not, the concavity plays a role If theplot is concave down then the Distribution can be describedas __________________
a. Normal
b. Positively skewed
c. Negatively skewed
d. No determination can be made
3.. A statistic used with the Normal Distribution whichrepresents a measure of position and the number of standarddeviations a data value is above or below the mean is called____________________
a. Median
d. Z score
c. Truncated value
d. Variability Coefficient
4. A statistical adjustment technique which is used when asample size is large and the probability is not close to 0 or 1 andthe distribution is Binomial is the _____________.
a. Exponential Integration
b. Normal approximation to the Binomial Distribution
c. Trimmed Mean to the Binomial
d. Poisson Equal Factor
5. A special distribution which has only 2 outcomes, hasdiscrete variables. a fixed number of trials . and all the outcomesare independent is the ________________.
a. Geometric Distribution
b. Binomial Distribution
c. Infinite Distribution
d. Hypergeometric Distribution