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A marketing research company needs to estimate which of two soft drinks college students prefer. A random sample of n college students produced the following 98% confidence interval for the proportion of college students who prefer drink A: (0.384, 0.424). Identify the point estimate for estimating the true proportion of college students who prefer that drink.
If probability of getting sample mean x less than unreported sample mean is 0.025, determine value of the unreported sample mean?
Following data from an x bar chart, is the process capable (capability index>1.33)?
A doctor is doing research on the effects of medicine in a patience body. He randomly selects 10 patients that have been given a medication and records the number of days that have passed since they have taken the drug and concentration of the dru..
Assume sps professors have the average life normally distributed of 82 years, with population standard deviation of 5 years. Determine percent of sps professors will not live more than 80 years?
Although there is a popular belief that herbal remedies such as ginkgo biloba and ginseng may improve learning and memory in healthy adults, these effects are usually not supported by well-controlled research.
Evaluate and discuss the following hypothesis based on what you have learned about hypothesis statements. Should they be written differently, or are the sufficient the way they are stated?
Assume a business researcherwishes to test hypothesis that greater proportion of marketing managers keep track of such obligations.
In how many ways can at least one of the 3 selected vials have a hairline crack if the order of selection does not matter?
If 36 sand dollars are selected at random for collection, determine the probability that average diameter of those sand dollars is more than 3.80 centimeters. Suppose that variable is normally distributed.
If random samples of 36 download times are selected, what is the probability that the sample mean will be less than 0.84 seconds?
Human populations can be modeled using an exponential growth function. Use the Library for research or other resources to find the following:
Find the critical F value for the Following,
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