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In a recent year, 125.8 million adults, or 58.6% of the adult American population, were married. In a New England town, a simple random sample of 1,445 adults includes 56.0% who are married. Use a 0.05 significance level to test the claim that this sample comes from a population with a married percentage of less than 58.6%.
a. What is the probability of a type I error? b. Give the formula for the test statistic.
1) There are 500 employees in a firm, 45% are female. A sample of 60 employees is selected randomly. a) Determine the standard error of the proportion.
At a large commercial bakery, one of the measures familiar with evaluate employees is the number of broken cookies per 1000 produced. The quality control department wants to determine if there is a relationship between years of experience and bro..
When there are multiple observations per subject, what issues are there with doing a MNL and an ordered logit model, answer in detail and provide example.
Based on this information, if department employee selects random sample of n = 9 containers, determine probability that mean volume for sample will be greater than 1.01 gallons?
For the sample of men, performance on the simulator task declined by an average of 2.9 points with s = 4.1. Is this a statistically significant change? Use a two-tailed test with = .05.
For the experiment above, let X denote the number of hearts that are drawn. For this random variable, find its expected value and standard deviation.
If we want to estimate the selling price on the basis of age, which variable is the dependent and which is the independent? Draw a scatter diagram.
On average a certain intersection results in 3 traffic accidents per month. What is the probability that for any given month at this intersection
Compare population means or proportions to determine the relationship between variables.
Using Non-parametric test, whether there is significant difference in the motor coordination skills.
Set up a hypothesis test. Is Charmers' truthful? Describe by working through hypothesis test.
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