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The central limit theorem can be used to analyze round-off error. Suppose that the round-off error is represented as a uniform random variable on [-1/2, 1/2]. If 100 numbers are added, approximate the probability that the round-off error exceeds 1, 2 and 5.
a standardized test has a mean of 104 and a standard deviation of 16. we want to be 98 certain that we are withing 4
For the grand opening, an arena has selected 5 finalists, each of whom will win a season ticket located in one of 5 sections: The upper balcony, lower balcony, main floor, courtside, or a luxury box.
Are X and Y independent?
For a population with a mean of (u)=50 and a standard deviation of (o)=10, how much error on average would you expect between the sample mean (M) and the population mean for the following samples
question a statistics instructor is interested in the correlation pearson r between how many hours a student sleeps
What assumption tests should be used? A fifth grade science teacher want to know if there is a relationship between final exam scores and overall course points after adjusting for a quiz score.
Test for significant differences among weight losses for the five diets, and perform all pair wise comparisons using:
Based on the information in part (a), what decision should the director make about the books used for the courses if the goal is to keep the cost below $300?
question 1suppose the value of investment properties is normally distributed witha mean of 550000 and a standard
Enzymatic method: 13.1, 12.7, 12.6, 13.3, 13.3. GC method: 13.5, 13.3, 13.0, 12.9. Does the enzymatic method give the same value as the GC method at the 95% confidence level?
Research question : At α = . 05, is cockpit noise level independent of flight phase?
Convinving evidence at the .05 significance level to support the claim that the actual number of cards is an undergrads wallet is greater than 4.09. state the null and alternative hypothesis.
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