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1. 30% of the population in a southwestern community are Spanish speaking Americans. A Spanish speaking person is accused of killing a non Spanish speaking American and goes to trial. Of the first 12 potential jurors only 2 are Spanish speaking Americans, and 10 are not. The defendant's lawyer challenges the jury selection claiming bias against her client. The government lawyer disagrees saying that the probability of this particular jury composition is common. Compute the probability and discuss the assumptions
2. Dr Richmond, a psychologist is studying the daytime television viewing habits of college students. She believes 45% of college students watch soap operas during the afternoon. To further investigate, she selects a sample of ten.
Develop a probability distribution for the number of students in the sample who watch soap operas.
a. Find the mean and the standard deviation of this distribution.
b. What is the probability of finding exactly four watch soap operas?
c. What is the probability less than half of the students selected watch soap operas?
Generate a relative frequency histogram using ten-point intervals to show the distribution of the scores.
Assuming the nurses surveyed were a simple random sample from the population of all nurses in the United States, find the appropriate null hypothesis for these data
Create the corresponding decision tree and make recommendations.
Determine her weighted mean grade? What letter grade did she earn? (A, B, C, D or F).
Assume that the amount your town's population grows every year is fixed or constant. Utilize your equation in part b to approximate the population in the year 2030.
The data in the scatterplot below are an individual's weight and the time it takes (in seconds) on a treadmill to raise his or her pulse rate to 140 beats per minute. The o's correspond to females and the +'s to males.
Find the probability that a randomly selected employee earns less than $5.43.
Determine the probability that at most 4 fish will be killed?
The American Automobile Association checks the prices of gasoline before many holiday weekends.
Compute the value of the proportion of the population.
If the population mean is estimated within two days, how many salespeople should be sampled?
Modify above problem (Problem 8th) so that each hardware vendor now demands seventy-five (75) units. Any units available from the vendors that are not shipped cost nothing.)
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