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Suppose a computer chip manufacturer rejects 2% of the chips produced because they fail presale testing. Assuming the bad chips are inde- pendent, find the probability of each of the following.
a) The fifth chip they test is the first bad one they find.
b) They find a bad one within the first 10 they examine.
c) The first bad chip they find will be the fourth one they test.
d) The first bad chip they find will be one of the first three they test.
1. a survey was conducted to measure the height of men. in the survey respondents were grouped by age. in the 20-29 age
Consider you have completed a survey of employees working in a call center doing customer service for a major manufacturing company.
Identify the sampling distribution to be used: the standard normal distribution or the Student's t distribution. Find the critical value(s).
The managers of a brokerage firm are interested in finding out if the number of clients a broker brings into the firm affects the sales generated by the broker.
The sum of two numbers is less then 27. The second number is 7 less then the first. What are the possible values for the first and second number
Shown below are the results of a one sample t test. Make up a problem that someone could solve using the printout. Do not make up the data. Just assume the data were collected and produced the given statistics.
researchers were interested in the relationship between age and brain activity. they collected data on 20 subjects
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If pX (respectively, pY ) is the true proportion of times the first (respectively, the second) cleaner is successful at removing the specific stain, determine an approximate 95% confidence interval for pX - pY .
construct your own empirical probability situation. that is determine a probability value in relation to your expected
We considered Mary's interest in doing a study to see if learning of 6th graders on a math lesson is affected by background noise level. She was planning to use 2 noise conditions and then analyze her outcomes using a t-test for independent groups..
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