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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?
Z score on comparison distribution for sample score and your conclusion. Suppose that all population are normally distributed.
Suppose among 312 large city residents sampled, 65 refused to cooperate. What is the margin of error at the 95% confidence level.
Assuming that the variability is unchanged (i.e., σ = 6), is there sufficient evidence to suggest that the strength of the product has increased at the 1% level of significance?
Illustrate what decision should be made depended on the mini-max regret criterion. Decision based on the Mini-max criterion.
Find out the mean number of letters that will arrive in two days.
Identify Independent and Dependent variable being investigated. Formulate the hypothesis statement regarding your research issue.
What is the best estimate of the average tread life for the entire population of these tires?
Armstrong Faber produces a standard number-two pencil called Ultra-Lite. Since Chuck Armstong started Armstrong Faber, sales have grown steadily. With the increase in the price of wood products.
If the variability of the filling machine is reduced to 0.025 ounce, verify that this will lower the required average amount of coffee to 4.050 ounces and yet keep 98 percent of the jars above 4 ounces.
(a) Use the steps of hypothesis testing, (b) figure the effect size for the study; and (c) explain your answers to (a) and (b) to someone who has never had a course in statistics.
Express the null hypothesis and the alternative hypothesis in symbolic form: An entomologist writes an article in a scientific journal, which claims that fewer than 7 in ten thousand male fireflies are unable to produce light due to a genetic muta..
A personnel manager for a large corporation feels that there may be a relationship between absenteeism and age and would like to use the age of a worker to develop a model to predict the number of days absent during a calendar year.
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