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Suppose from a sample of data, we have X passengers nally show up for a ight while n people booked the tickets.
(a). State the hypothesis test (with the formula of test statistic) could be used to see if the show-up ratio of people booked tickets is larger than 0.7.
(b). Find the formula for the P-value for the hypothesis test, and state your understanding of it and make sure it is understandable by people (mostly your future colleagues, bosses or clients) without much statistic background.
At a significance level of .05, the management wants to perform a hypothesis test to determine whether the quality of items produced appears to be independent of the production process used. Calculate the expected number of defective units produce..
The response of the GSS question in 2006 about the number of hours daily spent watching TV, the responses by the seven subjects who identified themselves as Hindus were 2,3,2,1,0,1,4,3. find a point estimate of the population mean for Hindus. The ..
Use the table to determine whether the correlations are significant and how you would interpret the results. The correlation between speed and strength for 20 women is .567. Test these results at the .01 level using a one-tailed test.
What is the p-value and compute a 95% CI for the difference in means between the two groups?
Consumer Review posts reviews and ratings of a variety of products on internet. The following is a sample of 20 speaker systems and their ratings (www.audioreviews.com).
Suppose that you are interested in determining the effectiveness of an intensive supervision program (ISP) for poor student performers. To examine its effectiveness, you keep track of 12 students entering an ISP for one year and tabulate the numbe..
Build a scatter plot, Find the value of the linear correlation coefficient r, and find the critical value of r using α=0.05. Determine whether there is sufficient evidence to support a claim of a linear correlation between the two variables.
What is the probability that sara will die in her 60th year? using this probability and the $50,000 death benefits, what is the expected loss?
A company tracked the number of complaints it received during the first 6 months of last year, as shown in the following table:
If the sample size is 36 with three treatment means (response variables) and you are performing an ANOVA, then the degrees of freedom for the error term will be:
What was the highest score earned on the exam? According to Chebyshev's Theorem, how many students scored between 42 and 74?
Normal distribution has mean of 80 and standard deviation of 14. Find out the value above which 80 percent of values will occur.
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