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A recent study of consumers ages 35-44, found that last year 56 out of 800 consumers had made a purchse using the internet; this year 180 out of 1200 plan to make a purchase using the internet. Test the claim that the proportion of consumers ages 35-44 who plan to make purchases using the internet has increased at α = 0.01.
Evaluate the result in part c with the decision using the expected value approach.
Two fair six-sided dice are tossed independently. Let X be value of first die, and Y value of second. Find out the expectations of following random variables.
Test hypothesis that two processes have identical fractions nonconforming. Use a = 0.05. Create 90% confidence interval on difference in fraction nonconforming between two processes.
Consider a worker-paced line with three process steps, each of which is staffed with one worker. The sequence of the three steps does not matter for the completion of the product.
The National Collegiate association (NCAA) reported that the mean number of hours spent per week on coaching and recruiting by college football assistant coaches during the season 70.
A prof. can't decide how to vote on a tuition increase for the students at her univ. The incrase is supposed to pay for new student parking and there appears to be mixed feelings. The prof.
Perform the five-step hypothesis test on the data. - LORA - this is the portion I am responsible for based on using the nonparametric hypothesis testing.
Using the letter M for male and F forfemale. Define a second sample space S and where the elements represent the number of females selected.
Answer the following questions using the null hypothesis as "the individual does not have the disease." a. What is the probability of Type I error? (Round your answer to 2 decimal places.) b. What is the probability of Type II error? (Round your answ..
What do these results say about testing with group data? Include in your answer the URLs of the sites where you found the necessary data.
Assume the standard deviation is $160 and that the amount spent is normally distributed. What is the probability that the amount spent on a randomly selected child is more than $700?
Write down the difference between reliability and validity? Write down the different kind of reliability and validity. What kind of reliability and validity would you seek in assessing employee performance?
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