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Suppose a compact disk (CD) you just purchased has 8 tracks. After listening to the CD you decide that you like 4 of the songs. WIth the random feature on your CD player, each of the 8 songs is played once in random order. Find the probability that among the first two songs played.
(a) You like both of them. Would this be unusual?
(b) You like neither of them.
(c) You like exactly one of them.
(d) Redo (a)-(c) if a song can be replayed before all 8 songs are played.
A building contractor pays $500 to bid on a contract. If he gets the contract, the probability of which he estimates to be 0.70, he will make a profit of $50,000.
Using the Student's t distribution statistical table, determine 1.645 value. Describe why t distribution approaches z distribution as sample size gets larger.
An important issue facing Americans is the large number of medical malpractice lawsuits and the expenses that they generate. In a study of 1228 randomly selected medical malpractice lawsuits
Construct a 95% confidence interval estimate for the proportion of Americans who decided what to make for dinner either at the last minute or that day.
The 99% confidence interval estimate for a population variance when a sample standard deviation of 12 is obtained from a sample of 10 items is:
Compute the average of the areas. How does this compare with your guess? How does it compare with the averages of the judgment samples for the others in your group?
How would you define Incidence Rate
the null hypothesis is to be tested at 95% confidence. Determine the critical value(s) for this test.
Determine the mean, median, and mode, determine the interquartile range and determine the variance and standard deviation - compute the mean and the median. What is the shape of the distribution? Decide with measure of central tendency works better..
1.colleges conduct student evaluations of instruction to determine if there are patterns of either excellence or the
Conduct a matched pairs t-test to see if the differences in locations is significant - The air in poultry-processing plants often contains fungus spores.
The scores are normally distributed with a mean of 165 and a standard deviation of 17. If only the top 20% of the soldiers are selected, what would the cutoff score be?
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