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Far West University offers both day and evening classes in business administration. One question in a survey of the students inquires how they perceive the prestige associated with certain careers. Each student was asked to rank the careers from 1 to 8, with 1 having the most prestige and 8 the least prestige. the results were as follows:
Career Ranking Rankingby Day by EveningStudents StudentsAccountant 6 3Computer Programmer 7 2Branch Bank Manager 2 6Hospital Administrator 5 4Statistician 1 7Marketing Researcher 4 8Stock Ananlyst 3 5Production Manager 8 1
Find Spearman's Coefficient of Rank Correlation.
A raffle offers a first prize of $1000 2 second prizes of $300 and 20 third prizes of $10 each. If 15000 tickets are sold at 75 cents each, find the expected winnings (IN CENTS) for a person buying one ticket?
A final exam in Math 157 is normally distributed and has a mean of 75 with a standard deviation of 12. If 36 students are randomly selected, find the probability that the mean of their test scores is greater than 70.
The average delivery time is 26.7 with a standard deviation of 8.527. If the customer estimates the time using a 99% confidence interval, what is the margin of error?
In the following questions, you should demonstrate your understanding of sampling distribution:
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?
The average age of the women was 36.97 with a standard deviation of 8.893. If a 95% confidence interval is calculated to estimate the difference between the two average ages, what is the margin of error? Assume both population standard deviations ..
Hagger Engineering Corporation is considering undertaking several proposed projects for the next fiscal year. The projects, the number of engineers and the number of support personnel necessary for each project.
Formulate the hypotheses that can be used to determine whether union membership increased in 2006.
The following data shows the packages gathered for delivery for ten days and the proportion of packages received not delivered to the customers at expected time.
What is wrong with this design? What confounds could be leading to the results of improved memory and problem-solving skills?
(A) At the 0.05 level of significance, use the six step critical value approach to hypothesis testing to try and prove that the 2004 proportion has increased. (B) Use the 5 step p-value approach. Interpret the meaning of the p value.
Search the Internet to find three applications of statistical concepts that you find interesting, that you encounter on a daily basis, or that you find in your profession.
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