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From 500 customers, a major appliance manufacturer will randomly select a sample without replacement. The company estimates that 25% of the customers will provide useful data. If this estimate is correct, what is the probability mass function of the number of customers that will provide useful data?
A Private firm reports that 8% of the 2 million small businesses who apply for loan each year receive special interest rate (usually higher than market rate) because of high riskiness associated with small business.
The representative received 40 percent of the popular vote in that area of the state. She doubts whether it has changed much. How many registered voters should be sampled?
question 5 cards are dealt from a well shuffled deck. you get 2 for each ace in your hand but pay 1 for the privilege
the probabilities that a batch of 4 computers will contain 0 1 2 3 and 4 defective computers are 0.6274 0.3102 0.0575
Regression model results can be erroneous if multicollinearity is an issue. What causes multicollinearity? If the intercept is statistically significant, what does this tell you?
what can a researcher do to influence the size of the standard error?what can a researcher do to influence the
imagine you are a manager at a major bottling company. customers have begun to complain that the bottles of the brand
the lengths in centimetres of nails produced in a factory are normally distributed with mean 4.0 and variance 0.0016.
suppose that the life span of a certain type of fan has an exponential distribution with a mean life span of 25000
Sun Microsystems has approximately 50% of the high-end Unix machines market with its closest competitor being IBM. Suppose that 15 firms were in the market to purchase a high-end Unix machine. Assume that these firms listened to sales pitches by a..
Given that alarm has just sounded, find out the probability that real emergency situation exists?
owner of a store that sells cds wants to estimate the mean amount of time a customer remains in the store. a random
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