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While taking a multiple choice test, I realize I cannot answer the 5 questions without guessing. There are 5 choices for each question, A B C D or E. Only one answer is correct for each questions. What is the probability of me guessing.
A) Exactly two correct
B) At most two correct
C) All Five Correct
Utlizing binomial approximation to normal finding the normal model. A grower claims that only 13 percent of the strawberries he grows are unsatisfactory.
The time a cashier spends processing individual customer's order are independent random variables with mean 2.5 minute and standard deviation of 2.
Can we conclude that the mean time for a game is less than 3.50 hours? Use the .05 significance level.
Is the school district correct in assuming the girls are equal in performance to boys. They are 95% sure their assumption is correct.
It is reported in USA Today that the average flight cost nationwide is $342.59. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually less than $342.59. What are the appropriate hypoth..
Determine the pairs which are significant according to LSD and what pairs are important according to Bonferroni?
A. what is the probability a randomly chosen business customer flying is on a jumbo jet? B. what is the probability a randomly chosen non-business customer is on an ordinary jet?
The annual salary of an electrical engineer is given in terms of the years of experience by the table below. Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 45 years of experience.
Compute the coefficient of multiple determinations.
The design tolerance thickness for an automotive part is 55 mm to 65 mm. If the process mean thickness is 61 with a standard deviation of 2.3 mm, then what percentage of the sheets will be acceptable? (i.e. What percentage will fall within the des..
Show the graph of the probability density function for flight time.
Find the 90%, 95% and 99% confidence intervals for the proportion of all voters who favor the issue. How many more voters should we include in the sample if we need to reduce the margin of error by half?
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