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A company adminsters an "aptitude test for managers" to aid in selecting new management trainees. Prior experience suggests that 60 percent of all applicants for management trainee positions would be successful if they were hired. Furthermore, past experience with the aptitute test indicates that 85% of a applicants who turn out to be successful managers pass the test and 90% of appkicants who turn out not to be successful managers fail the test.
1) If an applicant passes the aptittude test for managers," what is the probability that the applicant will be succeed in a management position?
2) What is the probability an applicant does not pass the test and is a sucessful manager?
A noted psychic was tested for ESP. The psychic was presented with 400 cards face down and asked to determine if each card was marked with one of four symbols: a star, cross, circle, or square. The psychic was correct in 120 cases. Let p represent..
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 95% confidence interval around the mean of each of the three groups and plot the confidence interval in the space provided above.
An issue that faces individuals investing for retirement is allocating assets among different investment choices. A study conducted 10 years ago showed that 65% of investors preferred stocks to real estate as an investment.
Equation of the regression line - Evaluate the equation of the regression line and Find y' when x=47 years.
A survey of Ohio University students was conducted to determine if there was a particular Green that was desired by students to live on. A sample of students responses are reproduced below. Do students prefer a particular Green? Use critical value..
Use the F test of ANOVA (assume α = 0.05) to decide whether or not there are any differences in true average lumen outputs between the three brands for this type of light bulb.
What the information do z-scores give that actual heights do no?
The theory underlying inferential statistics and other theoretical aspects are subjects we do not often consciously think about in our daily activities.
Test whether race and NATFAE are independent (α = 0.05). What do you conclude?
The monthly income of residents of Dayton is normally distributed with a mean of $3000 and a standard deviation of $500.
Consider the situation where you have three game chips, each labeled with one of the numbers 5,6,& 7 in a hat:
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