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The probability of successfully rehabilitating a convicted criminal in a penal institution is 0.40 . A random sample of 3 convicted criminals is selected from the institution. A ssume that the behavior of each person does not depend on that of others.
a) What is the probability that all of the 3 criminals are successfully rehabilitated?
b) What is the probability yhat none of the 3 criminals are successfully rehabilitated?
c) What is the probability that at least one of the 3 is successfully rehabilitated?
Do these results suggest that the racial makeup of the faculty members is different from that of the students? (Use the .05 significance level.) Use the five steps of hypothesis testing and explain your findings.
Workers at a large toxic clean up project are concerned that their white blood cell counts may have been reduced. Let x be a random variable that represents white blood cell count per cubic millimeter of whole blood in a healthy adult.
Bring to mind a research question that interests you, or a current event that utilizes statistics to present results, that you can use as an example for this discussion. State the research question or the current event and results.
The data are reported in thousands of dollars. The following data represent a ransom sample from the study. Compute the sample correlation coefficient r. Give a brief explanation of the meaning of this value.
at baseball practice a batter can swing at a pitch until he gets 3 hits. the probability that he hits a random pitch is
In patients with congestive heart failure, two or more drugs were prescribed in 257 of 437 U.S. patients. In Scotland, 39 of 179 patients had two or more drugs prescribed
a randomized trial is conducted to evaluate the efficacy of a new cholesterol lowering medication. the primary outcome
If 28% of the residents play poker and garden and 70% of the residents play both shuffleboard and poker, then find the probability that a resident plays poker, given that they garden.
Identify the independent and dependent variables. Perform a regression analysis on the data.
Determine the probability of a positive economic trend given an increasing employment. Are employment and economic trend independent?
The probability that the residents?own 2 cars is 55%. Of the households surveyed, 60% had incomes over $50,000. The probability that the? residents of a household own 2 cars is?
multiple choice question based on multiple regression.the following estimated regression model was developed relating
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