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In 2006 75.9% of first year college students responding to a national survey said that they used internet frequently for research or homework. Administrators at a large state university believe that their current first year students use the internet more frequently than students in 2006. They find that 168 of an SRS of 200 of the universitys first year students said that they used the internet frequesntly for research or homework. Is the proportion of first year students at the university who said that they used the internet frequently for research or homework larger than the 2006 national value of 75.9% ?
a. Explain in words what parameter p is in this setting.
b. What are the null and alternative hypothesis H0 and HA ?
c. What is the numerical value of the sample proportion p^ ? The P-value is the probability of what event?
d. The P-value is P=0.0037. Explain carefully why this is reasonably good evidence that H0 is not true and that HA is true.
Keith's florist has 18 delivery trucks used mainly to deliver flowers in the SC area. Of these 18 trucks, 5 have brake problems. A sample of 4 trucks is randomly selected. What is the probability that 2 of those defective have defective braked. Ro..
Determining probability when guessing answers. Test comprise of multiple- choice questions each having 4 possible answers (a, b, c, d) one of which is right. Suppose that you guess answers to six such questions.
What quantitative method can be applied to help the Department make the decision? Outline how this method can be applied and explain how a qualitative method can also be applied to help the Department make the decision
Bill Russ, the production manager at Ross Co., maintains detailed records on number of times each machine breaks down and requires service all through the week. Bill records show that the Puret grinder has required repair service according to the ..
For the following hypothesis test where H 0 : m £10 vs. H a : m >10, we reject H 0 at level of significance a and conclude that the true mean is greater than 10 when the true mean is really 8.
Which of the following best expresses the value of using percentages in data presentation? A. Provides for the calculation of marginals.
The combined production level should not exceed 1200 units per month. The demand for product II is no more than half the demand for product I.
How large random sample of potential voters will be required to evaluate result with 95% confidence and with margin of error of plus and minus 3%?
MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?
Using an appropriate statistical test determine if there is a significant association between gender and satisfaction with the new initiative.
Enter the data and use the appropriate commands to find the mean, median, mode, sample standard deviation, population standard deviation, 10% trimmed mean, and data count.
Prepare a scatter plot and Interpret the meaning of slope, b1, in this problem
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