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Find out the weighted mean for three exams if first one was worth 20% and student received a 80, the second was worth 50 % and the student received a 90 and third was worth 30 % and the student rece
Determine the probability that a randomly selected senior is in exactly one of two classes (but not both)? If the student is in the French class, determine the probability the student is also in the S
A large industrial firm purchases several new word processors at end of each year. The exact number of word processors purchased depends upon the frequency of number of repairs in the previous year.
Preliminary road tests conducted by Econotire's quality control division suggest that the lifetimes of its new, inexpensive radial are normally distributed with the mean lifetime of 30,000 miles an
You and the friend decided to get your cars inspected. You're informed that 72% of cars pass inspection. If the event of your car passing is independent of your friend cars passing, What is the prob
You and a friend decided to get your cars inspected. You're informed that 72% of cars pass inspection. If the event of your car passing is independent of your friend cars passing, Determine the prob
A parts store sells both new and employed parts. 60% of the parts in stock are employed. 61% are used or defective. If 5% of the store's parts are defective, what percentage is both employed and def
A box contains ten chips. The chips are numbered 1 through 10. Otherwise, the chips are identical. From this box, we draw one chip at the random, and record its value. We then put the chip back in t
Systematic lies by respondents are sometimes managed with Warner Randomized Response Model. Provide an example to illustrate how this might help.
Assume that gambler plays a $1 game 7 times. In each game, his probability of winning is 20 percent. If he wins, he gets $4 prize. He gets nothing if he loses. To profit on games (i.e. win more than
Micromedia is currently planning a two-day seminar on the use of Microsoft Excel in statistical analysis. The projected fee for the seminar is $300 per student. The cost for the conference room, in
Suppose you are going on the weekend trip to city that is d miles away. Make a model that determines your round-trip gasoline costs.
Let W1 and W2 be independent geometric random variables with parameters p1 and p2.
The systolic blood pressure of 18-year-old women is normally distributed with mean of 120 mmHg and standard deviation of 12 mmHg. What percentage of 18-year-old women have systolic blood pressure be
Calculate the mean and standard deviation of random variable x, the number of smokers who started before 18 in 400 trials of probability experiment.
A Binomial probability experiment is conducted with given parameters. Calculate the probability of x successes in the n independent trials of the experiment.
In certain engineering schools of university, 60% of students are employed and 80% of the students are full-time. Ninety percent of the employed are full-time students.
If a class of 589 students took a test. And the mean of the test was a 77.2 and the standard deviation was 13.4. Failing is getting below a 70. How many students failed the test?
Consider a business research topic that interests you or is related to your current profession/employment and present a report answer the following questions:
Assume the probability distribution X= number of jobs held during the past year for students at HFCC is as follows:
A random sample of 33 adult men had the mean weight of 182.5 pounds and a standard deviation of 22.5 pounds. Find out a 99% confidence interval for the mean weight of adult men
Delta Airlines quotes the flight time of 2 hours, 5 minutes for its flights from Cincinnati to Tampa. Assume we believe that actual flight times are uniformly distributed between 2 hours and 2 hours
Because of staffing decisions, managers of the Gibson-Marimont Hotel are interested in the variability in the number of rooms occupied per day during a particular season of the year.
A researcher is investigating relationship between personality and birth order position. A sample of college students is classified into four-order categories (1st, 2nd, 3rd, 4th or later) and given
Explain the differences between correlations and regressions. Can you describe situations where you would use one of these over the over and why you would do so?