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23% of college students say that they use credit cards because of the rewards program. you randomly select 10 students who say that they use the credit card because of its rewards program. Find the nmber of students who use a credit card because of thier rewards progam is, exactly two, more tan two, and between two and five inconclusive.
The mean amount purchased by a typical customer at Churchill\'s Grocery Store is $23.50 with a standard deviation of $5.00. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the foll..
Give a possible description why serum cholesterol values for older males are lower than for younger males and reverse is true for females.
Find the sample mean and sample standard deviation for the amount of unspent money returned at the end of the day.
In this research report you will be analysing a set of data of which can be found in an EXCEL file available for download in the Assessment section of the Blackboard site.
Conduct the hypothesis test and compute the p-value. At a 0.05 level of significance, what is your conclusion?
What is the 90% confidence interval estimate of the difference between two population means.
It is known that 60 percent of all registered voters in the 42nd congressional District are Republicans. There registered voters are selected at random from the district. Compute the probability that exactly 2 of the 3 selected are Republicans, u..
Suppose that the results of the sample lead to rejection of the null hypothesis. Classify that conclusion as a:
Assuming that these results are sample data randomly selected from the population of all past and future Olympic games
Using your knowledge of infectious disease epidemiology, quantify the pattern of disease X in this group, i.e., what are the infectivity, pathogenicity, and virulence of disease X?
How many cans of paint should the sample contain if the researcher wants to be 98% certain of being within one percentage point of the true proportion of this chemical?
Carry out the test for the variance of girls score is not significantly less than the given data.
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