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A consumer group rated 12 manufactured products imported from a single source on a scale of 1 to 10. The data are shown below. Do the data provide sufficient evidence to indicate that the median score is greater than 5? Use the sign test at the 1% level of significance.
2, 9, 6, 7, 8, 5, 10, 2, 8, 5, 3, 4
In standard normal distribution standard deviation is always ___.
Of 1338 people who came into a blood bank to give blood, 253 people had high blood pressure. Estimate the probability that the next person who comes in to give blood will have high blood pressure.
Media Disk, Inc. duplicates over a million 3.5" floppy disks each year by copying masters to stacks of blank disks. The company buys its blank stock from two different suppliers, A and B.
Write down the name of 4 parts of the regression equation.
In our discussions of basic probability theory the concepts of mutually exclusive events and independent events share prominent roles.
1. determine if this is an example of probability or statistics the average cost of groceries has risen by 4.2 in the
Develop the 5-Step Hypothesis Test for a particular claim related to your work or life environment. (This should be a test of one-sample mean or one-sample proportion.
Explain why the sequence is important. What might happen if the hypothesis test is performed before the researcher has decided on the significance level?
a study showed that 32 of all firms in county a are owned by women. you are phoning local businesses assuming that the
Calculate the sample statistic and standard error you will use to create the test statistic.
What is the probability that the sample mean will be at least 1000? Do you need to use the central limit theorism to answer this question? explain.
Suppose a bag contains 7 red chips, 8 black chips, and 3 green chips. You draw two chips (without replacement) from the bag. Find the probability that you drew a red chip ?rst and then a black chip second.
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