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Here is my test question: at a university in 1985, a proportion of .47 of sociology majors were women. You assess the gender composition of a random sample of 187 sociology majors at the same university today and discover 105 females. Test a hypothesis to see if this proportion has changed since 1985. I have the t-score of 1.660 an a standard error of .036. I hope they are correct, but also need the test effect and test statistic, p-value.
Describe why the normal distribution can be used as an approximation to binomial distribution. What conditions should be met to use the normal distribution to approximate the binomial distribution? Why is a correction for continuity essential.
Construct ogive cure and numerical measures for the discrete data.
The rejection region for a two-tail test that uses the standard normal distribution is that area under the distribution lying
Recognize and describe potential threats (up to 3) to internal validity.
A sample proportion is calculated from a sample size of 394. How large of a sample would we need in order to decrease the standard error by a factor of 9?
Using this information, calculate Blpha risk (probability of Type II error) if the true population mean really is 81.
Determine the coefficient of determination. Assuming a direct relationship between the variables, what is the coefficient of correlation?
Student team examined parked cars in 4 different suburban shopping malls. One hundred vehicles were studied in each location. Research question : At α = . 05.
A researcher uses hypothesis test to estimate H0 µ= 80. Which combination of factors is most probable to result in rejecting null hypothesis?
When such digits are randomly generated, what is the distribution of those digits? Given such randomly generated digits, what is a test for "goodness-of-fit"?
A Gallup Poll (June 9 to 12, 2008) interviewed a random sample of 822 adults (18 years or older). The people in the sample were asked about their level of confidence in a variety of institutions in the United States. Here are the results for small..
Jon Molnar will graduate from Carolina Forest High School this year. He took the American College Test (ACT) for college admission and received a score of 30.
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