Suppose that a probability distribution has a mean 20 and standard deviation 3. The Chebychev inequality states that the probability that an outcome lies between 16 and 24 is:
a. less than 7/16
b. at least 7/16
c. at most 1/4
d. at least 1/4
e. none of the above
Jill wants to do her MBA in Statistics at a B.C. university. She applies to two universities that offer post-graduate degrees in Statistics. Assume that the acceptance rate at University A is 25% and at University B is 35%. Further assume that acceptance at the two universities are independant events.
A) What is the probability
A normal distribution has a mean of 50 and a standard deviation of 4.
a-compute the probability of a value between 44.0 and 55.0.
b-compute the probability of a value greater than 55.0.
c-compute the probability of a value between 52.0 and 55.0
The U.S. Bureau of Labor Statistics collected data on the occupations of workers 25 to 64 years old. The following table shows the number of male and female workers (in millions) in each occupation category (Statistical Abstract of the United States: 2002)
(see chart in the attached file)
a. Develop a joint probability tab
Please show all of the steps and processes you used to solve each of the problems
1. Would you suspect that the IDEA surveys sent to South students each term could be biased in the responses received? Why or why not?
2.Using the data set below, please calculate the:
12 16 12 10 20 10 10
- Mean =
- Median =
If 10% of all disk drives produced on an assembly line are defective,
a. What is the probability that there will be exactly one defect in a random sample of 5 of these?
b. What is the probability that there will be no defects in a random sample of 5?
The IQ of adults in a certain large population is normally distributed with mean 100 and standard deviation10. If a person is chosen at random form this group. the probability that the person's IQ is less than 85 or greater than 110 is:
e. none of the above
I am not sure how to compile the contingency table from probabilities given.
Each yr ratings are compiled concerning the performance of new cars during the first 90 days of use. Suppose that the other cars have been categorized according to whether the car needs warranty - related repair (yes or no) and the country in which t