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Question 6 Using the DOT status groups, generate the chi-squared test statistic, by hand, using a calculator, or using a computer. Alpha = 0.05 df = _____ (5 pts) Critical value = _____ (5 pts) Chhi-squared test statistic = _____ (5 pts) Based on comparing the Chi square statistic to the critical value which of the following is true? (5 pts) a. Successful outcome is dependent on DOT status. b. Successful outcome is independent of DOT status. c. No conclusion can be made. d. The Chi square test is invalid because of only 1 degree of freedom. Observed Treatment Success DOT Yes No Total Yes 186 64 250 No 86 60 146 Unknown 3 0 3 Total 275 124 399 Expected Treatment Success Values DOT Yes No Total Yes 172.31 77.69 250 No 100.63 45.37 146 Unknown 2.07 .932 3 Total 275 124 399
Find the cumulative distribution function
Given a standard normal distribution
a screening test for a newly discovered disease is being evaluated. in order to determine the effectiveness of the new
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The probability that a given bird house will be returned for a refund is 0.04. Suppose that 30 bird houses are sold on a particular day. Find the probability that exactly 2 of those bird houses will be returned for a refund.
1.consider the following scenario for object recognition with two types of objects a and b where the ultimate goal is
Determine if there is a difference in gas prices between Ontario and Quebec.
an experiment is conducted in which 60 participants each fill out a personality test but not according to the way they
Calculate the sample size needed given these factors
What assumptions about the number of pedestrians passing the location in an hour are necessary for your hypothesis test to be valid?
1. hint let pi 0.02 as shown in the table for nofree premium channels.a. pxlt 3 b. px 0 px 1 c. px gt 4 1 - px le4
problem1 the data below shows the number of absences x and the final grade y of seven students in the statistics
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