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From long term experience it is known that the time required to answer a set of 10 computer managed questions in the Data Analysis course follows a normal distribution with mean = 15 minutes and standard deviation = 2 minutes. If a randomly chosen off campus student answers a test of 10 computer managed questions, answer the following questions
a. What is the probability that she would complete the test in less than 14 minutes?
b. What is the probability that she would complete the test between 15 and 19 minutes?
c. Determine her completion time so that only 10% of the students doing the test will take longer than her?
d. For a set of 5 randomly selected tests (each with 10 questions), what is the probability that her mean completion time will be 14 minutes or more?
What is the probability that it will be handled by Adam? If it turns out that the problem was solved, what is the probability that it was handled by Adam?
business travelers use laptop computers on overnight business trips. State the hypotheses and test the assumption that two third of business travelers use a laptop (α = 0.05).
A student is selected at random and found to have a GPA of less than 2.5, what is the probability that the student is from a private school?
Which of the following methods could lead to stronger evidence for the outcome of a nonparametric test?
discovering statistics referring to the information from my first question as stated nielson media research reported
Create the 95% confidence interval for proportion of adults from Country A who say human activity contributes to global warming.
Create the 95% confidence interval for portion of respondents who feel president is doing a good job. Based on the intervalin part(a), It is sensible to conclude that majority.
You want to know how the commuting time of your employees compare to Departments competing for the same staff, so you get some survey data on average commuting times for36 randomly selected people in your line of business.
In a large section of statistics class, the points for the final exams are normally distributed with a mean of 72 and a standard deviation of 9. Find the lowest score on the final exam that would qualify a student for an (A, B, C, D)
At a computer manufacturing company, the actual size of computer chips is normally distributed with a mean of 1 centimeter and the standard deviation of 0.1 centimeter. A random sample of 12 computer chips is taken. What is the possibility that th..
A shipment of 150 television sets contains three defective units. If a vending company buys three of the units in the shipment, what is the probability that at least one of the units is defective?
What is the variance of the Control-In scores for the athletes? What is the variance of the Control-In scores for the non-athletes?
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