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Q1) How many dissimilar computer passwords are possible?
a) If each password comprises of three symbols and if first one should be a number and other 2 should be letters
b) If each password comprises of 3 symbols and if first one should be a Letter and the other 2 should be Numbers
c) Which one do you think is more secure and why?
Q2) Automobile license plate comprises of 3 letters followed by 4 digits. How many different plates can be made?
a) If repetitions are permitted
b) If repetitions are not permitted
c) If repetitions are allowed in the letters but not in digits.
The average number of putts per hole for each player and their average driving distance is used to predict their total winnings using the multiple regression model where the deviations εI are assumed to be independent and Normally distributed with..
What is the probability there will be between 10 and 14 calls inclusive arriving at the company in the next 15 minutes?
One of the major measures of the quality of service provided by any organization is the speed with which responds to customer complaints. A large family-held department store selling furniture and flooring, including carpet, had undergone a major ..
How many boxes must the processor sample to be 95 percent confident that the sample mean does not differ from the population mean by more than 0.2 pounds?
The 50 members of the placebo group had blood pressure lowered by an average of 15 points with standard deviation 8 points. To analyze this information we will use a, When testing whether or not the increases in spending are different, the test is ..
Find out whether this is enough evidence to accept or reject manager's null hypothesis, using alpha = .01. Is this test left-tailed, right-tailed or two-tailed?
At a computer manufacturing company, the actual size of computer chips is normally distributed with a mean of 1 centimeter and the standard deviation of 0.1 centimeter. A random sample of 12 computer chips is taken. What is the possibility that th..
At the .01 significance level, is there a difference in the mean number of times men and Women order take-out dinners in a month? What is the p -value?
where the deviations εi are assumed to be independent and Normally distributed with mean 0 and standard deviation σ. This model was fit to the data using the method of least squares. The following results were obtained from statistical software.
If you draw one ball from the urn what is the probability that it is blue or white?
Karefree State University has an enrollment of 18,000. Researchers took a sample of 900 and found 477 students wanted a Field Hockey team. Construct the 95% and 99% Interval estimates for the population proportion.
At the .05 significance level, can we conclude that the guideline is still reasonable?
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