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Consider the following data:
x
1
2
3
4
5
P(X=x)P(X=x)
0.3
0.2
0.1
Find the value of P(X≤4). Round your answer to one decimal place.
Records show that 13% of all college students are foreign students who also smoke. It is also known that 25% of all foreign college students smoke. What percent of the students at this university are foreign?
Calculate and interpret the appropriate statistical test to determine the relationship between the following two variables. Use the five-step model of hypothesis testing to draw conclusions at the .05 level of significance
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Does the sample suggest that trees in the Hopkins Forest are more susceptible than trees from the rest of the region?
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Test the claim that Brand 1 and Brand 2 both have same variances for tire life span. Use 0.05 significance level
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Suppose that a random sample of 15 consumers agrees to participate in a study aimed at proving this claim, and that their results, extrapolated to savings per gallon per year are ($): 0.95, 1.07, 1.09, 1.12, 0.85, 1.17, 1.25, 0.82, 0.99, 1.02, 1.1..
given a sample size of 65 with sample mean 726.2 and sample standard deviation 85.3we perform the following hypothesis
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