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A marketing research firm suspects that a particular product has higher name recognition among college graduates than among high school graduates. A sample from each population is selected, and each asked if they have heard of the product in question. A summary of the sample sizes and number of each group answering ''yes'' are given below: College Grads (Pop. 1):High School Grads (Pop. 2):n1=99,n2=100,x1=71,x2=51 Is there evidence, at an α=0.073 level of significance, to support the claim of higher name recognition among college graduates? Carry out an appropriate hypothesis test, filling in the information requested. A. The value of the standardized test statistic: B. The p-value is
Albert Einstein stated, "The formulation of a problem is far more often essential than its solution, which may be merely a matter of mathematical or experimental skill.
Perform the indicated test of hypothesis. HO: M 7, given x= 0.01, N=25, Xbar = 7.019 and SD is =.1681. Assume the sample is selected from a normally distributed population.
If random samples of 36 download times are selected, what is the probability that the sample mean will be less than 0.84 seconds?
An experiment was performed to investigate lifetime of a component exposed to high heat. Three different oven types were used at either 550°F or 600°F.
Explain briefly how simple data analysis methods you are to use in this project can be used in your chosen engineering discipline and for what purpose.
A Patent Medicine Company supervisor assumes that the bottling machine is operating properly if only 5 percent of the processed bottles are not full. A random sample of 100 bottles had 7 bottles that weren't full. Using a significance level of .01..
All else being equal, what occurs to your confidence interval when you increase value of alpha?
1.i plan an experiment to test the latest conflicting diet programs. the factor for diet will involve three different
A color- blind person is chosen at random. What is the probability of this person being male? Assume that there are an equal number of males and females.
In each of the following situations, the sampling frame does not match the population, resulting in undercoverage. Give examples of population members that might have been omitted:
Suppose there are two samples of size 6 and 7, with a rank sum of 58 in the sample of size 6. Using the Wilcoxon rank sum test, evaluate the significance of the results, assuming there are no ties.
A bottling company uses a filling machine to fill plastic bottles with cola. The bottles are supposed to contain 300 milliliters (ml). In fact, the contents vary according to a normal distribution with a mean of 298 ml and a standard deviation of 3 m..
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