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Q1) As condition of employment, Fashion Industries applicants should pass a drug test. Of last 220 applicants 14 failed the test. Develop 99% confidence interval for proportion of applicants that fail the test. Would it be sensible to conclude that more than 10% of applicants are now failing the test? Additionally to testing of applicants, Fashion Industries randomly tests its employees all through year. Last year in 400 random tests conducted, 14 employees failed test. Would it be sensible to conclude that less than 5% of employees are not able to pass random drug test?
Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name. Estimate the value of the population proportion.
The profit for product 1 is $6 per unit, and the profit for product 2 is $4 per unit. Solve this model by using graphical analysis.
The mean number of passengers per flight is 160 with a standard deviation of 20. The aircraft used for the route has 200 seats.
To find out the prior probability, conditional probability and posterior probability. Calculate the posterior probability that the bid will be successful given a request for additional information.
If desired confidence level is 95 percent, suitable critical value is?
What proportion for smoking teenagers think their peers care a lot about keeping their weight down?
For each problem, compute a Welch F-statistic and determine whether or not significant differences exist among the treatment conditions.
Assume that flight times from SAN to ATL are exponentially distributed with a mean of 4.5 hours and a standard deviation of 0.2 hours. Assume that you must fly from SAN to ATL weekly for the lucrative consulting engagement for one year (52 flight..
An experiment consists of flipping the fair coin three times and noting the number of heads and tails. A random variable x is defined to be two times the number of heads plus the number of tails.
In order to estimate the difference between the average hourly wages of employees of two branches of a department store, the following data have been gathered.
If circuit switching is utilized, how many user can this access link support?
What is the distinction between a one-sided and a two-sided hypothesis test in this problem?
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