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A standard 52-deck of playing cards has 13 spades, 13 hearts, 13 diamonds, and 13 clubs. A card is randomly chosen from the deck. It is then replaced and a second card is chosen. What is the probability that the first card is a spade and second card is a diamond?
question 1 the amount of jen s monthly phone bill is normally distributed with a mean of 50 and a standard deviation
A large population of overdue bills has balances that follow a normal curve. When we take a sample of 100 of these the average is $500 and the SD is $100.
1. a sample survey of 54 discount brokers showed that the mean price charged for a trade of 100 shares at 50 per share
What is the probabillity that in a random sample of 1,200 undergraduate business students, 336 or more will major in accounting?
Smoking on campus. suppose 20% of the students on campus smoke. you select two students at random. In what percentage of samples will both students be smokers?
Test the hypothesis. Will you reject or not reject the null hypothesis at α = 0.05
A random sample of 77 eighth grade students' scores on a nation mathematics assessment test has a mean score of 278 with a standard deviation of 31.
The same chance of being selected as does any other group. What is the probability that at least one of the shifts will be unrepresented in the sample of workers?
Describe the advantages and disadvantages of quasi-experiments? What is the fundamental weakness of a quasi-experimental design? Why is it a weakness? Does its weakness always matter?
Give an example of a problem (business, political, scientific) in which ANOVA analysis would be appropriate. (Hint: the dependent variable is categorical, such as male vs. female or comparing three different types of fertilizer.)
suppose that a particular candidate for public office is in fact favored by 48 of all registered voters in the
A political pollster randomly selects a sample of 100 voters each day for 8 successive days and asks how many will vote for the incumbent. The pollster wishes to construct a p chart to see if the percentage favoring the incumbent candidate is too err..
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