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You have conducted a simple survey that has asked 100 people who have either attended an event (n=25) you promoted in the past and those who have not (n=25) and those who have contributed to the event in the past (n=25) and what they think about the event. You have asked a number of Likert-type questions that you have shown to be a measure of event liking (scores range from 1 to 7) and event support.
1. What inferential statistical tests are appropriate to answer your research question as to whether past participation and contribution will make a difference in people enjoying, and supporting an event?
2. Would t-tests or chi-square tests for differences be appropriate? Why or why not?
To determine if there is a relationship between grade performance and extracurricular participation, North Carolina state conducted a study of 112 students, recording the number of students in each of three extra-curricular categories, and each of..
The population variances are 4.6 and 5.0 respectively. Using a level of significance of .05, is there evidence that the dual degree students are receiving lower grades? Fully explain your answer.
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Estimate the value of the start-up company Garcia,
Two groups of students are asked to rank their preference for six types of soft drinks. The following table shows their rankings.
Evaluate this statement: "Without good measurement, statistical analysis is worthless." Do you believe it is an overgeneralization.
Assuming no discrimination based on gender, what is the probability of getting 41 or fewer women when 100 new employees are hired?
An investor wants to assess at confidence level of 98% if a medicament can improve the marks of students. He notices that for the following daily dozes: 2,2.5,3,4.5,7 mg, the improvement over the students that studied the same but took no mental b..
Use the following data to write the normal equations of the linear regression between Y and X, and find the least squares regression.
Given that X1 is in the model, does X2 contribute to predicting the dependent variable at the .05 significance level?
If the auditor takes a simple random sample of 93 accounts, what is the probability that the mean of the sample will be within 110 dollars of the population mean?
The proportion who died from coronary heart disease was .00669 for smokers and .00413 for nonsmokers. Describe the association of smoking each alung cancer.
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