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In studying satisfaction patients have with an operation I have 2 random groups each given a different questionaire. I want to compare the responses of each group and see if the different percentage satisfied with their operation is statistically different depending on which questionaire they received. Total patients = 410 Group F 191 and had 170 satisfied Group S 219 and had 206 satisfied. What formula do I use to calculate if responses statistically different (p<0.5) between these groups please,
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Is there evidence that the population mean amount is different from 8.17 ounces? (Use a 0.05 level of significance.)
What is the coefficient of determination, and wat is its meaning?
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Consider a random sample of 200 shafts, and let X denote the number among these that are nonconforming, what is the (approximate) probability that X is: At most 30.
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Sue and Jim approached the machine first. They both said they wanted red gum balls. What is the likelihood they will get their wish?
The average number of television sets in the sample households turns out to be 1.86, and the SD is 0.86. Find a 95% confidence interval for the average number of television sets per household.
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