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A corporation has 15,000 employees. 62% of the employees are male and 23% percent of the employees earn more than $30,000 a year. 18% of the employees are male and earn more than $30,000 a year. An employee chosen at random happens to be a male. What is approximately the probability that he earns more than $30,000 a year?
Someone suggests classifying a computer as damaged if it fails any of the tests. Discuss the advantages and disadvantages of this test plan.
Use the normal approximation to find the probability that the student scores 70% or lower on a 100-question test.
Determine whether the given value is a statistic or parameter. in a study of all 1900 students at a college, it is found that 25% own a computer.
suppose ralphie vs exam percentage on any exam at cu can be described by a random variable x where x n7552. for the
Is there a difference in the extent of wound healing by treatment? (Hint: Are treatment and the percent wound healing independent?) Run the appropriate test at a 5% level of significance.
The mean on this test is 3.5 with a standard deviation of .5. Sally scores 1.5 on this test. How many standard deviations is Sally from the mean?
Alcohol appears to be involved in a variety of birth defects, including low birth weight and retarded growth. A researcher would like to investigate the effect of prenatal alcohol on birth weight.
What is the probability of exactly two earthquakes of magnitude 8 or higher?- What is the probability of at most four earthquakes of magnitude 8 or higher?
The Heart of Darkness is one of the great literary criticisms of Imperialism in Africa. Marlow, the main character, is originally fascinated by the possibilities that exploring Africa has to offer a young man seeking his fortune and a name for him..
1.colleges conduct student evaluations of instruction to determine if there are patterns of either excellence or the
a bicycle factory runs two assembly lines a and b. 97 of line as products pass inspection and 89 of line bs products
The objective of the sampling was to estimate the average dollar value of all prescriptions issued by the company. The following data were collected:
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