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You are employed with Northeast Airlines and have been asked to find out rate of on-time arrivals for four competing airlines at proposed hub location. At present Northeast ranks in top three for on-time arrivals with average on-time arrival rate of 82%. Company wishes to exceed on-time rate of competitors at new hub. Hundreds of flights arrive at location daily. Determine the main advantages and disadvantages of employing sampling in application?
It is suspected that the mean turnover has changed and is not 6.0. Use the .05 significance level. State the decision rule.
Construct a binomial distribution chart and table showing all of the outcomes if a woman would like to know all possible outcomes of having 3 children. Also show this using a probability tree diagram.
Number of miles flown in a One- year period by the sample of "frequent flyers" was recorded. Is this a grouped or an ungrouped frequency distribution?
With a confidence of 95%, what is the margin of error for the proportion of all carp that would incorporate the gene into their DNA?
Multiple comparison procedures are going to be done using the Bonferroni method with = 0.05. The value of t** is 2.4667. Which of the following is the appropriate conclusion from carrying out these multiple comparisons?
The possible responses to the question "How would you rate our quality of service?" with 1=excellent, 2=good, 3=fair, 4=poor, describes what type of variable?
Test hypothesis that Site B is more successful in initiating acquaintances than Site A. Use alpha = .05.
To be 99% sure that we will not be late in completing the project, what is the requested completion time in work-days?
Then, give two examples of correlation which are evaluated in a business environment and discuss the decision made by evaluating the correlation.
The probability that student pilot passes the written test for a private pilot's license is 0.7. Find the probability that the student will pass the test: (a) on the third attempt (b) before the fourth attempt.
Estimate the true mean price for this particular model with 95% confidence?
Explain the distribution of mean of samples of size 15.
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