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Confidence interval on proportion difference
Question:
A survey reported in Time magazine included the question ''Do you favor a federal law requiring a 15 day waiting period to purchase a gun?" Results from a random sample of US citizens showed that318 of the 520 men who were surveyed supported this proposed law while 379 of the 460 women sampled said ''yes".
Use this information to find a 95% confidence interval for the difference in the two proportions, Pm-Pw , where Pm is the proportion of men who support the proposed law and Pw is the proportion of women who support the proposed law.
For the following ANOVA table are the results from treating 4 cultures with 6 observations for each culture. The enzymes are contained in test tubes with differing levels of enzymes applied.
let x be the number of trials required to obtain a success where p is the probability of success on each trial. the
If a filled container of juice is selected at random, what is the probability that it was filled on machine I and is a conforming container?
A sample of 9 production managers with over 15 years of experience has an average salary of $71,000 and a sample standard deviation of $18,000.
What is the probability that the income is between $1,000 and $1,800? (Be able to draw a graph to illustrate your results)
For a normal distribution, find the z-score value that separate the middle 90% of the distribution from the 10% in the tails.
The philosophies that created the US Constitution were a political experiment, one that had never been tried before. Write an analysis of the influence and changes for each of the following democratic republican ideals ideals.
The results of inspection of DNA samples taken over the past 10 days are given below. Sample size is 100.
a 97 confidence interval in inches for the mean height of a population is 65.4 67.0. this result is based on a sample
12% of the time, there are 12 students in the class, 26% of the time there are 17 students in the class, 37% of the time there are 22 students in the class, and otherwise, there are 28 students in the class. What is the expected number of students..
A produce manager wants to estimate the mean size of coke bottle fills with 95 percent confidence. A preliminary sample of 12 bottles shows a sample standard deviation of 3 mil, and mean of 500.
there is a claim that a certain method of gender selection increases the likelihood of a baby girl the probability of a
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