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A salesperson goes door-to-door in a residential area to demonstrate the use of a new Household appliance to potential customers. She has found from her years of experience that after demonstration, the probability of purchase (long run average) is 0.30. To perform satisfactory on the job, the salesperson needs at least four orders this week. If she performs 15 demonstrations this week, what is the probability of her being satisfactory? What is the probability of between 4 and 8 (inclusive) orders?
Now the challenging questions: if the salesperson wants to be at least 90 percent confident of getting satisfactory evaluation in her job this week, how many demonstrations should she perform? How would your answers to above questions change if the probability of success increases (say by training) to 0.35?
Constructing histogram, Using a normal probability plot, Plotting residuals versus x values.
A fair coin was flipped three times and landed heads three times. What is the probability of a head on the next toss?
Table shows the smoking habits of group college students. If student is selected at random, determine the probability of getting someone who is man or a woman.
Calculate the mean and standard deviation of the sample mean based on data from 100 stores.
The event "the price of stock X has increased and the price of stock Y has not increased" may be written as??
The GMAT scores from a sample of 50 applicants to an MBA program indicate that none of the applicants scored below 450. A frequency distribution was formed by choosing class intervals 450 to 499, 500 to 549, and so on, with the last class having a..
What is Peter's median grade point at graduation? What is the shape of the grade point distribution?
In an article entitled "Fuel Economy Calculations to Be Altered," James R. Healey indicated that the government planned to change how it calculates fuel economy for new cars and trucks.
When the level of confidence and sample standard deviation remain the same, a confidence interval for a population mean based on a sample of n = 100
Find out the probbility that exactly five arrive within two days?
Determine critical value if alpha = 0.05? If p-value for this test is 0.025, this p-value means?
Perform a contingency analysis on the data to determine if there is any dependency between the number of level of education attained by the father and the size of his family.
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