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Question: Refer to Exercise. The authors also wanted to test whether women with different levels of education would differ in their ability to guess the sex of their babies correctly. Of the n = 45 women with more than 12 years of education, 32 guessed correctly. Of the n = 57 women with 12 or fewer years of education, 24 guessed correctly. (Two women did not report their level of education.) Is there sufficient evidence to conclude that women in the populations with these two different levels of education differ in their ability to guess the sex of their baby? Carry out the test using a 5 .05, and make sure to state a conclusion.
Exercise: Perry et al. (1999) wanted to test the folklore that women who have not been given information about the sex of their unborn child can guess it at better than chance levels. They asked a sample of 104 pregnant women to guess the sex of their babies, and 57 guessed correctly. Assuming chance guessing would result in 50% correct guesses, test the hypothesis that women can guess at a better than chance level. Carry out the test using a = .05, and make sure to state a conclusion.
a city ballot includes a local initiative that would legalize gambling. the issue is hotly contested and two groups
What is the expected value for the number of parents that a randomly selected child was living with in 2004?- Does the concept of expected value have a meaningful interpretation for this example? Explain.
For each problem, compute a Welch F-statistic and determine whether or not significant differences exist among the treatment conditions.
Open the divorce.sav data file and run the one-way ANOVA to answer the following questions: What are the effects of marital status on life satisfaction? State the independent and dependent variables
A Tamiami shearing machine is producing 10 percent defective pieces, which is abnormally high. The quality control engineer has been checking the output by almost continuous sampling since the abnormal condition began.
If a yes answer is coded 1, a no answer is coded -1, and an undecided answer is coded 0, find the mean and the variance of the code.
Amazon.com celebrated its 13th anniversary in July 2007. Its growth can be seen by examining its increasing sales volume (in $billions) as reported by Hoovers.
How many students should be surveyed if a 90% confidence interval is desired and the margin of error is to be only 3%?
If the outcome is tails, you win nothing. Let X be the amount that you win in a single toss of a coin. Find the probability distribution of this random variable and its mean.
in a random sample of 40 felons convicted of aggarvated assault it was determined that the mean length of sentencing
The chemical engineer added a chemical to a fast-burning compound that changed the oxygen consumption once the reaction started.
Distinguish between factor, treatment, and treatment levels in the context of a health care facility.- Explain the importance of experimental design in quality control and improvement for a financial institution.
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