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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?
Compute the 95% confidence interval around the mean of each of the three groups and plot the confidence interval in the space provided above.
The analysis of variances produces df between = 3 and df within = 24. For this analysis, determine df total ?
A check of dorm rooms on a large college campuses revealed that 38% had refrigerators, 52 percent had TVs and 21 percent had both a TV and a refrigerator. What's the probability that a randomly selected dorm room has.
At 1 excavation site 8641 pot shards have been found that have not presently been cleaned also identified. Define the probability.
Two groups of students are asked to rank their preference for six types of soft drinks. The following table shows their rankings.
Using the .05 significance level, can we conclude that there is a positive association between the two variables?
Describe the given data show a seasonal effect using moving average method. Describe the data which show a seasonal effect.
Find out the suitable critical value(s) for this situation given a 0.05 significance level. Find out/compute the value of sample test statistic.
Determine the mean and standard deviation of the data. What percentage of the data lies within one standard deviation of the mean value?
When the Sharpe Ratio for the market portfolio is 0.5, what risk-free rate Rf is the market anticipate? Draw on a diagram for the Capital Market Line derived from the above data. Make sure to clarify the intercept and the slope.
Using alpha = 0.05 and a computed value of +4.49, can we conclude that the percentage of claims for married policyholders is less then for single policyholders?
An experiment was conducted to determine the effects of three different pesticides (P1,P2,P3) on the yield of three different varieties of citrus tree (V1,V2,V3).
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