A small software development project consists of the following eight activities. Activity Expected Time Critical Variance
A 4 4.0
B 5 Yes 3.0
C 2 0.0
D 4 Yes 1.0
E 5 Yes 1.0
F 8 4.0
G 6 Yes 1.25
H 2 0.0

Required:
a. Specify the Project Completion Time and the Standard Deviation.
b. Calculate the z value.
c. What is the probability of completing the project in 23 weeks or less

Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x