Mathematics, 05.05.2020 18:58, lilsnsbsbs
1) The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airports. The maximum possible rating is 10. Suppose a simple random sample of 50 business travelers is selected and each traveler is asked to provide a rating for the Miami International Airport. The ratings obtained from the sample of 50 business travelers follow.
8 8 4 0 5 5 5 4 4 4 4 3 1 0
6 1 0 1 0 0 8 5 4 3 2 4 7 8 9
1 0 8 4 5 5 4 4 3 8 9 9 5 3
9 8 8 5 1 0 4 1 0 5 5 3 3
Develop a 95% confidence interval estimate of the population mean rating for Miami. Round your answers to two decimal places.
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2)
Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $20,000 and $40,000. Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired.
a. What is the planning value for the population standard deviation?
b. How large a sample should be taken if the desired margin of error is $300? Round your answer to the next whole number.
$150?
Answers: 2
Mathematics, 21.06.2019 17:00, TheRunningPotatoe245
Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false
Answers: 2
Mathematics, 21.06.2019 17:30, NathalyN
The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period. value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?
Answers: 2
Mathematics, 21.06.2019 18:10, hellodarkness14
Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial
Answers: 1
1) The International Air Transport Association surveys business travelers to develop quality ratings...
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