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Question: Environmental changes have recently been shown to improve firms' competitive advantages. The approach is called the multiple-scenario approach. A study was designed to find the percentage of the Fortune top 1,000 firms that use the multiple scenario approach. The null hypothesis was that 30% or fewer of the firms use the approach. A random sample of 166 firms in the Fortune top 1,000 was chosen, and 59 of the firms replied that they used the multiple-scenario approach. Conduct the hypothesis test at α = 0.05. What is the p-value? (Do you need to use the finite-population correction factor?)
Find a 99% confidence interval for the true proportion of radar-detector users who have had an accident in the past three years.
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?
the state test scores for 12 randomly selected high school seniors are shown on the right. assume the population is
A random sample of eight adults aged 30 years were asked how much they spent on medical costs in the year 2011. The following data were measured.
Why is it said that the main feature of the Pareto diagram is its ability to separate the vital few from the trivial many ? Discuss.
A nationwide study of motels and hotels is being conducted. An attempt will be made to determine the extent of the availability of online links for customers.
Composite sampling is a way to reduce laboratory testing costs. A public healthdepartment is testing for possible fecal contamination in public swimming pools. In thiscase, water samples from 5 pools are combined for one test.
What assumptions are required in using the one-way ANOVA?- explain the meaning of each term in the equation, then use the appropriate terms from the equation in presenting and explaining the null hypotheses to be examined.
if the null hypothesis for the f-test has been rejected a researcher can use either the scheffe or tukey test to
a company that produces dvd drives has a 12 defective rate. let x represent the number of defectives in a random sample
Use the above to test the hypothesis that having a cellular phone in your car and being involved in an accident are independent. Use the 5 percent level of significance.
How can you determine if two vectors are dependent or independent and Is division of a vector by another vector defined?
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