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Online magazines make it easy for reasers to link to an advertiser's website directly from an advertisement placed in the digital magazine. A recent survey indicated that 56% of online magazine readers have clicked on an advertisement and linked directly to the advertiser's website. The survey was based on the sample size of n=6403
a) Use the five step p-value approach to try to determine whether there is evidence that more than half of all reasers of online magazines have linked to an advertiser's website.
b) Suppose that the sample size was only n=100 and as before, 56% of the online magazine reasers indicated that they had clicked on the an advertisemenet to linke directly to the advertisers website. Use the 5 step p-value approach to determine whetherthere is evidence that more than half of all the reasers of online magazines have linked to an advertisers website.
c) Discuss the effecct that sample size has on hypothesis testing.
d) What do you think are your chances of rejecting any null hypothesis concerning a population proportion if a sample size of n=20 is used?
Dark treatment is between 0.26 and 1.14 cm shorter than the (population) mean for plants with the Light treatment. Discussion: Are Dark shorter than Light?
In answering this questions, set up and test appropriate hypotheses using D = 0.01. Construct a 99 percent confidence interval on the true mean difference in breaking strength.
The Starbucks in the Bauer College of Business found that 24% of customers purchase more than one cup of coffee per day from their shop. If 180 customers are randomly selected one day, what is the probability that no less than 25% of them purchase..
Douglas Boats is considering the possibility of expanding the warehouse for the WM-4 motors. How much should Douglas Boats expand, and how much would it be worth for the company to make the expansion? Assume demand is constant throughout the year.
Determine the highest number of miles (to nearest whole number) that motorist could drive in month and still qualify for discount?
For the binomial lattice model, Sn = S0 Y1 × · · ·×Yn , suppose p = 0.75,d = 0.90, u = 1.5:When r = 0.05: Show that the stochastic process Mn = Sn /(1 + r)n , n ≥ 0, forms a SUBmartingale.
Find the minimum sample size needed using a prior study that found that 36% of the respondents said they support abolishing the penny.
Given the following values 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and x and y form a linear equation in one variable, a equation in two variables, a quadratic equation a polynomial of three terms
1. describe the data that are collected for an independent-measures t test and the hypotheses the test evaluates.2.
a recent survey found that 86 of the population has never been a victim of a violent crime. if a sample of 13 is
Consider random variables X and Y with a joint pmf, given in the following table. Compute the conditional expectations E[X|Y = 1] and E[X|Y > 1].
The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample men and population mean for a sample of n = 100 is 2 points. Explain the difference in the standard error for the two sampl..
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