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In a battleground state, 36% of all voters are Republicans. Assuming that there are only two parties - Democrat and Republican, if two voters are randomly selected for a telephone survey, what is the probability that they are both Republicans? Round your answer to 4 decimal places.
P dollars is invested at annual interest rate r for 1 year. If the interest is compounded semiannualy, then the polynomial P(1+r/2)^2 represents the value of the investment after 1 year.
lakewood fashions must decide how many lots of assorted ski wear to order for its 3 stores. Information on pricing, sales and inventory costs has led to the following payoff table. what decision should be made using minimax regret.
There are 25 students in a probability class. Assume that there are 365 days in each year, and that the birthrate is constant throughout the year.
A final exam in Math 157 is normally distributed and has a mean of 75 with a standard deviation of 12. If 36 students are randomly selected, find the probability that the mean of their test scores is greater than 70.
A health and safety committee is to be selected from all the people who work at a local factory. The committee is to consist of four members selected randomly from a list of ten names.
The manufacturer of a new line of ink jet printers would like to include as part of their advertising the number of pages a user can expect from a print cartridge.
You draw two cards from a standard deck of 52 cards, but before you draw the second card, you put the first one back and reshuffle the deck.
Illustrate what is the probability all four calls are infact emergencies. Illustrate what is the probability that three or more calls are not emergencies.
Sample data in a goodness-of-fit test are compared with __________. A. a predetermined or historical standard for the variable being studied
Assuming the manufacturer's claim is true, what is the approximate probability of observing a sample mean of 52 months or less?
Complete the table and answer the following questions. Use the .05 significance level.
A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 925 hours. A random sample of 39 light bulbs has a mean life of 905 hours with a standard deviation o 55 hours.
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