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1. A polling organization conducted a study to test the claim at the 0.01 significance level, that the "refuse to respond the surveys" proportions are the same for the male and female college students. Among 134 randomly selected students, 9.3% refused to respond on a survey on cheating while among 154 male college students, 14.6% refused to respond to the same survey. Determine test statistic, critical values, p-value, and conclusion.
2. Determine the number of successes generated by the statement. Among 35 inspections, 75% failed.
According to Chebyshev's theorem, proportion of values from data set that is further than 2 standard deviations from the mean is at most?
Assuming these data are from two independent groups, calculate dfX, dfY, and dftotal for the data above. Determine the critical values for t based on the df you calculated for the question above, assuming a two-tailed test with a p level of 0.05.
Assume then money spent is uniformly distributed between these amounts. Determine the mean amount spent on insurance?
Perform the appropriate test for a difference in mean blood glucose and report the p-value for the two-tailed test of significance, assuming that the variances are equal.
a bank has the following data on the gender and marital status of 200 customers: single 20 male 30 female, married male 100 female 50,
One suggested environmental determinant of pediatric lung function is the level of cigarette smoking in the home. A researcher wants to do a pilot study with two groups:
Access the University of Phoenix Material, "Data for Inferential Practice Problems." Use the Excel® Analysis ToolPak? when necessary for the following:
There are four conditions/requirements that must be met in order to perform simple linear regression. For each of the conditions below, choose the technique that should be used to determine whether or not that the condition is met.(Each answer ma..
You might find the probabilities using the Table or software of your choice. Please explain how you obtained your results.
A standard die has its faces painted different colors. Faces3,4,6 are red, faces 2 and 5 are black and face 1 is white.
Assuming the percentages are based on independant simple random samples of 1,000 first year college students drawn each year.
Find an equation of the least squares regression line. Please show your work. Is there a linear correlation between "x" and "y" at the 0.01 significance level? Please justify your answer.
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