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Suppose an advocacy organization surveys 960 canadians and 192 of them report being born in another country. Similarly, 170 out of 1250 americans reported being foreign-born. Is there a difference in the liklihood of being born abroad between the US and Canada?
a) Is a two-sided or a one-sided alternative hypothesis more appropriate here?
b) find the p-value of the observed difference.
c) state a conclusion regarding rejection or non-rejection of the null hypothesis.
Use an appropriate 95 percent confidence interval to estimate the difference between the mean prices of the two brands of cd players. Do you think that the difference haspractical importance?
Range of numbers: What is the first and third quartile? What is the second decile and the eighth decile? What is the 67th percentile?
Discuss what makes a Crusty Pizza Company restaurant successful and conversely unsuccessful.
QUESTION 1: To identify the point in a distribution at which 50% of scores fall above and 50% fall below a given score, which measure of central tendency would you report?
In repeated rolling of a fair die, find the minimum number of rolls necessary in order for the probability of at least one six to be
you are interested in determining whether an experimental birth control pill has the side effect of changing blood
Consider strings of length 9 with elements being a, b or c. How many strings will contain at least 6 b a?
A random sample of 61 accounts were checked. The standard deviation was $286.20. At α= 0.01, test the firms' assumption. Assume the account balances are normally distributed.
Given a normal distribution with a mean of 100 and a standard deviation of 10, what is the probability that
a new bus route has been established between downtown chicago and springfield. dan has taken the bus to work for many
Two independent samples of sizes n1 = 50 and n2 = 50 are randomly selected from two populations to test the difference between the population means. The sampling distribution of the sample mean difference, is:
Assume we have a population of scores with a mean of 975 and a standard deviation of 15. Assume that the distribution is normal. Provide answers to the following questions:
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