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In May of 2002, the Gallup Organization asked a random sample of 537 American adults this question:
if you could choose between the following two approaches, which do you think is better penalty for murder, the death penalty or life imprisonment, with absolutely no possibility of parole? of those polled, 52% chose the death penalty.
a) create a 95% confidence interval for the percentage of all American adults who favor the death penalty. Show what the error for the confidence interval is also.
b) based on your confidence interval, is it clear that the death penalty has majority support? explain.
c) If pollster wanted to follow up on this poll with another survey that could determine the level of support for the death penalty to within 2% with 98% confidence, how many people should they poll?
Discuss the characteristics of a good research hypothesis. What distinguishes a null hypothesis from a research hypothesis? How would you explain the difference between non-directional research and directional research hypothesis?
there are two urns a and b. urn a contains 2 red balls and 1 blue ball urn b contains 1 red ball and 1 blue ball. an
What is the expected number of students who have registered on a pass/fail basis? What is the probability that more than three are registered on a pass/fail basis?
a) What is the probability that for any day, the number of special orders sent out will be more than 4? b) What is the standard deviation of the number of special orders sent out daily?
You are the manager of a fast food restaurant. You want to determine whether the population mean waiting time to place an order has changed in the past month from its previous population mean value of 4.5 minutes.
Determine the least squares equation. According to this information, what are the estimated sales for 2008 and 2009?
A random sample of 13 four-cylinder cars is obtained and the breaking distances are measured and found to have a mean of 137.5 ft and a standard deviation of 5.8 ft.
Starting with the initial solution derived by the nw corner method identify the cell w/the best cost improvement index and the quantity that can be transferred to that cell.
How many integers are there between 5 and 14? How Many rational numbers are there between 5 and 14?
In an effort to estimate the mean amount spent per customer for dinner at a major Atlanta restaurant, data were collected for a sample of 49 customers. At 95% confidence, what is the margin of error (to 1 decimal)?
If there is an outage, there is a .05 probability that the resulting losses will be very large, approximately $ 80 million in lost earnings. Also, it is estimated that there is a .95 probability of only slight losses of around $ 1 million. What is..
High School GPA is normally distributed with a mean of 3.06 and a standard deviation of 0.40. The probability of a randomly chosen student having a HS GPA between 3.54 and 3.80 is
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