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An auditor samples 100 of a firm level vouchers to ascertain what percentage of the whole set of voucher are improperly documented. what is the approximate probability that more than 30% of the sampled vouchers are improperly documented if, in fact, only 20%of all vouchers are improperly documented. If you were an auditor and observed more than 30% with improper documentation, what would you conclude about the firms claim that only 20% suffered from improper documentation and why?
A company producing a standard line and a deluxe line of dishwasher has the following time requirements (in minutes) in departments where either model can be processed
Powers Tire Company (Which specializes in tires for vehicles ca. 1965) needs your expertise to help them schedule over the next three months. They can make tires using regular labor, or subcontracting.
The resident would be interested in joining this recreation center if it were built. Of these 35 indicated they would be interested in joining the recreation center. The population of interest is?
Using z-scores, a population with m = 37 and s = 6 is standardized so that the new mean is m = 50 and s = 10. How does an individual's z-score in the new distribution compare with his/her z-score in the original population?
a bank has the following data on the gender and marital status of 200 customers: single 20 male 30 female, married male 100 female 50,
Calculate the expected value and standard deviation of the value.
Digital camcorder repair service has set the goal not to exceed average of 5 working days from time unit is brought in to time repairs are completed. Compute the t-value.
Suppose a t- test is being applied to find out if the population monthly expenditure mean is less than $212. The level of significance selected is 1% and 26 accounts are sampled. What is the critical value?
Suppose that you are conducting a survey of customer satisfaction regarding their cellular phone. If you called 11 households selected at random, what is the probability that:
In an experiment in which a die was rolled 188 times it was counted up how many times each face came up. The results are as follows:
Psychologists wanted to test whether a certain accelerated class' IQ was different than average. There were 25 students in the class; their mean IQ score was 108.
Hypothesis test of difference between two means based on independent random samples, which one of the given is correct rejection region at significance level of .05?
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