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For the following set of scores2,3,2,4,5,2,4,2,1,71,3,3,2,4,3,2,1,3,2
a) Create the frequency distribution tableb) Draw the polygon showing distributionc) Explain the distribution using the following characteristics
1. Determine the shape of the distribution2. what score best identifies the center (average) for the distribution3. are the score clustered together? Or they spread out across the scale?
What is the value of the test statistic? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
Determine the p-value for this test. Is there sufficient evidence to justify the rejection of H0 at the "alpha" level of 0.01? Please explain your answer.
A study group of long distance phone calls made from the corporate offices of Pepsi Bottling Group, Inc., in Somers, New York, revealed the length of the calls, in minutes, follows normal probability distribution.
From her district, consisting of several hundred stores, she selects a random sample of 30 stores. For each store she gathered the following information.
An article in Baltimore Sun claimed that the typical supermarket trip takes a mean of 22 minutes. Suppose that in an effort to test this claim, you select a sample of 50 shoppers at a Baltimore City Giant.
If the sample consists of n = 15 individuals, then compute df value for the t statistic?
Assume that in a hypothesis test with null hypothesis Ho: μ = 14.0 at a= 0.05, that a value of 13.0 for the sample mean results in the null hypothesis not being rejected. That corresponds to a confidence interval result of:
An auditor for Health Maintenance Services of Georgia reports 40% of policyholders 55 years or older submit a claim during the year. Fifteen policyholders are randomly selected for company records.
Analyze whether or not patients undergoing this treatment are illustrating significant change from baseline to 3 months afterward. Report a p-value.
Determine the probability that subscriber didn't rent the car during past 12 months for either business or personal reasons?
The mean driving time is 35 minutes with a standard deviation is 10 minutes. What is the 98 percent confidence interval for the population mean?
At α = 0.10, can the researcher conclude that alcohol consumption is related to sex? What kind of Chi-Square test is this?
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