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Imagine that 50 men and 50 women are asked, "Do you favor or oppose capital punishment for those convicted of murder?" In the observed data, 38/50 = .76, or 76% of the men favor capital punishment compared to 32/50 = .64, or 64% of the women.
a. Write null and alternative hypotheses about the possible relationship between sex and opinion about capital punishment.
b. A chi-square test of the statistical significance of the relationship has a p-value of .19. Is this evidence that there is a relationship? What is the justification for this conclusion?
c. Calculate the value of the chi-square statistic.
d. In part (b), the p-value was given as .19. Write a sentence that interprets this number.
Each home was 24 and the standard deviation of the sample was 5 people. Develop a 98 percent confidence interval for the population mean.
Weights of newborn babies in the United States are normally distributed with a mean of 3425 grams and a standard deviation of 495 grams. A newborn weighing less than 2200 grams is considered to be at risk. What fraction of newborn babies are in th..
business statistics questionin one season of 30 basketball games what would you expect is the longest streak of
the grade point averages gpa for 12 randomly selected college students are shown below. assume the population is
The temperature of a certain solution is estimated by taking a large number of independent measurements and averaging them. The estimate is 37?C, and the uncertainty (standard deviation) in this estimate is 0.1°C.
The purpose of this experiment was to determine how specifically selected water temperature (2 levels), The problem related to Basic Statistics and it discuss about factorial design in ANOVA
Your paper should in 500- 600 words 1) summarize the statistical methods that the researchers used in their article and 2) evaluate those statistical methods. Were the techniques they picked (correlation, hypothesis testing, regression, for exampl..
Depict the situation as a Harsanyi model of incomplete information, where a player's type is the color of his hat, and specify the vector of types corresponding to the true situation.
How many realizations of the vector may be generated? List them. - Are the realizations independent of one another?
a what is the probability that the space vehicle will have a successful launch?b given that the space vehicle had a
Now that you are an adult, you decide to test one of the truisms passed along by your mother: "Cheaters never win in the end." You randomly assign a group of 20 children to either cheat or to play fair on a scavenger hunt.
consider use of a students t distribution to test the difference of means for independent populations using random
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