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A federal report find that a lie detector test given to truthful persons have a probability of 0.2 of suggesting that the person is deceptive. A company asks 12 job applicants to take a lie detect test. Suppose that all 12 applicants answer truthfully.
1.What is the probability that exactly one is being deceptive.
2.What is the probability that at most one is being deceptive.
3.What is the mean and standard deviation of this distribution.
What is the null hypothesis? What is your decision if a = 0.01?
The probability of drawing two diamonds (to complete a flush) after discarding the 5 and 7.
At the .05 significance level, can we conclude that there is a difference in their mean times?
Find out the test statistic P-value, and critical value, and state the final conclusion. The mean IQ score of statistic professors is less than 120. Sample data: n = 46. Suppose that = 17, and the significance level is = 0.05.
Create a scatterlpot of P_RFM and P_HELM. If drawing plot by hand, use graph paper to make sure accuracy. Be sure you label axes. After you have created the scatterplot, consider its form and direction. Recognize outliers, if any.
Convert each of the following z intervals to x intervals.
The standard deviation is estimated to be 0.279. Use the 99% level of confidence.
Four young children were monitored closely over a period of several weeks to measure how much they watched violent television programs and their amount of violent behavior toward their playmates.
Prepare an ANOVA table and test the null hypothesis of no linear relationship between the two variables.
Conditional and compound probabilities.The table below gives the distribution of blood types by gender in a group of 1000 individuals.
Find the range, standard deviation, and variance for the scores.
What sample size and acceptable level would result in a probability of .05 that a good batch will be rejected and a probability of .10 that a bad batch will be accepted?
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