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In one trip of a cruise ship, 341 of the 3,745 passengers became ill with norovirus. At about the same time 260 of the 1,618 passengers on a second cruise ship also became ill from the norovirus. Treat the sample results as simple random samples from large populations, and use a 0.01 significance level to test the claim that the illness rate on the first ship is less than the rate on the second ship. Based on the result, does it appear that when a norovirus outbreak occurs on a ship, the proportion of infected passengers can vary considerably.
An election poll reported that a candidate had an approval rating of 48% with a margin of error E of 3%. Construct a confidence interval for the proportion of adults who approve of the candidate.
The subjects are asked their opinions about sex and marriage, attitudes toward women, welfare, foreign policy and many other issues. The implied population is All Americans.
part aanswer all of these questions using r commander. include all graphs outputs from r commander .this assignment
Given 7 male individuals in a Physical Education course, the number of sit ups each individual can do in a one minute period was recorded:
A stock price is currently $100. Over each of the next two three-month periods, it is expected to increase by 10% or fall by 10%. Consider a six-month European call option with a strike price of $105.
Choose a variable and collect data for at least three different groups (samples). Compare the means of the three groups using the one-way ANOVA technique. Complete the following
How can you tell what are the solutions of a quadratic equation by looking at its graph? Explain.
Using the internal rate of return as a decision criterion, determine whether or not this proposal should be accepted.
At 95% level of confidence, can we conclude that the babies using the Gibbs product gained less weight?
Which of the following is true regarding ANOVA? a) It is used to test for a difference in medians among three or more populations
10 cartons are taken at random from an automatic filling machine.The mean net weight of the carton is11.8 kg and standard deviation of 0.15kg. Does the sample mean differ significantly from the intended weight of 12kgs?
an accounting firm has noticed that of the companies it audits 85 show no inventory shortages 10 show small inventory
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