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1. If you were asked to play a game in which you tossed a fair coin three times and were given $2 for every head you threw, how much would you expect to win on average?
A. $3
B. $4
C. $5
D. $6
E. $7
2. Your company's internal auditor believes that 10% of the company's invoices contain errors. To check this theory, 20 invoices are randomly selected and 5 are found to have errors.
What is the probability that of the 20 invoices written, five or more would contain errors if the theory is valid?
A. 0.043
B. 0.3
C. 0.067
D. 0.6
E. 0.133
A simple question on the Mean of a Binomial distribution, 80% of the community favored building a police substation in their neighborhood.
Show your results numerically and graphically. What can you conclude about the affect of the rate of return on your retirement plans ?
How could I find the first and second order (differentiation) of the following functions:
train A travels at a speed of 40mph and train B travels at a speed of 60mph. Train A passes the station at 1:25, at what time will train a catch up to train B
The Jacksons plan a 3-Week trip with a budget of $600 for renting a car. Car rental rates are $135/week plus $0.17/km. Write a formula to show the number of kilometers the Jacksons can travel.
How much work was done lifting the sand this far? (Neglect the weight of the bag and lifting equipment.)
Identify the decision variables, objective function, and constraints in simple verbal statements.
Define a Markov chain with r+1 classes and find its transition probability matrix.
The number of ways to fully-parenthesize
1. Maria is a hostess at a local restaurant. When she earned $8 per hour, she worked 35 hours per week. When her wage increased to $10 per hour, she decided to work 40 hours. However, when her wage increased again to $12 per hour, she decided to cut ..
The standard error of the sample mean is equal to 5 when n=25. If the sample size increases by a factor of four, how will the standard error change?
If q is the number of quarts of lemonade , then (1/4) q can be used to find the number of cups of lemonade mix needed to make the lemonade. How much mix is needed to make each amount of lemonade.
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