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Question: No chi-square A school's principal wants to know if students spend about the same amount of time on homework each night of the week. She asks a random sample of 50 students to keep track of their homework time for a week. The following table displays the average amount of time (in minutes) students reported per night:
Explain carefully why it would not be appropriate to perform a chi-square test for goodness of fit using these data.
Suppose that your teammate has two siblings and two parents, for a family of size five. What is the probability that at least one of your teammate's family has the same birthday as yours, assuming their birth dates are all independent?
If Alex company produce next year apples, it needs to store with additional cost of $.10. Formulate the problem for linear equation with min cost and opt production.
What is the maximum possible value of when there are no tied X and/or tied Y observations? What is the minimum possible value of when there are no tied X and/or tied Y observations?
The population standard deviation for the height of high school basketball players is three inches. If we want to be 95% confident that the sample mean height.
Testing for Population mean - Based on this sample evidence, is Joan's supervisor correct? Use a = .05.
Calculate a 90% confidence interval for the percentage of homes in the US that had guns at the time of survey.
a. Calculate the probability that the sample proportion will be within ±0.05 of the population proportion. b. Calculate the probability that the sample proportion will be within ±1 standard error of the population proportion.
A 10 year study by the American Heart Association provided data on how age, blood pressure and smoking relate to the risk of strokes.
a study of the effects of acid rain on trees in the hopkins forest shows that of 100 trees sampled 25 of them exhibited
question 1a soft drink manufacturer is using a winning cap as a sales promotion. the purchaser can get a prize if they
Show that if a random variable has a uniform density with the parameters α and β, the rth moment about the mean equals
Let µ and ν be probability measures on S such that ν is singular with respect to µ on S, but absolutely continuous with respect to µ on each An with Radon-Nikodym derivative fn . Show that fn → 0 a.s. for µ. Hint: If fn → f a.s., show by Fatou's l..
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