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Someone found a logistic regression coefficient of -.09. She said "This means that one unit increase in X increases the probability of Y being 1 by exactly 9%." Briefly discuss if this is correct or not. If not correct, what's the correct interpretation?
A colleague measures the following heights (in inches) of 10 CEOs selected at random: 72, 75, 75, 66, 64, 79, 79, 75, 70, and 72.
Can the inoculation be regarded as (effective against the disease at 5% level of significance - Find the expected value of the number of good components in this sample
A Federal funding program is available to low income neighborhoods. To qualify for the funding a neighborhood must have a mean household income of less then $15,000 per year.
1. one characteristic of nonparametric tests is that they make few if any assumptions about the populations being
Explain why the chi-square goodness-of-fit test is not an appropriate way to find out. b) What might you do instead of weighing the nuts in order to use a test
As the U.S. economy cools down, investors look to emerging markets to offer growth opportunities. In China, investments have continued to grow.
Is digital marketing (e.g.e-commerce , social media marketing, e-mail marketing) more critical to business success than traditional marketing?
An Inventor has developed a new, energy-efficient lawn mower engine. He claims that the engine will run continuously for 5 hours (300 minutes)
Estimate the percentage of all American males who measure success primarily from their work. Use a 98% confidence interval.
What role should the state government take if any? Do you agree with the role the federal government wants to take?
Find a 90% confidence interval for the population mean annual number of reported larceny cases in such communities. What is the margin of error?
what is the probability you will reach in the drawer and randomly select a pair of green socks? (Assume sampling without replacement.)
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