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Determine the two-tail critical values from the t distribution in each of the following cases:(a) 1-α=0.95, n=10, (b) 1-α=0.99, n=10, (c) 1-α=0.95, n=32 (d) 1-α=0.95, n=48(e) 1-α=0.90, n=16.
A woman has n keys, of which one will open her door. (a) if she tries the keys at random, discarding those that do not work, what is the probability that she will open the door one her kth try?
Steroids A company has developed a drug test to detect steroid use by athletes. The test is accurate 95% of the time when an athlete has taken steroids.
In a random sample of 200 high school students in a city, 120 said that they are very concerned about the cost of college. Find a 99% confidence interval for the population proportion of all high school students in the city who are very concerned ..
researchers found a correlation coefficient of r .50 on personality measures for identical twins. a reporter
a politician claims that she will receive 65 of the vote in an upcoming election. the results of a properly designed
The prices (in dollars) for a sample of roundtrip flights from Chicago, Illinois to Cancun, Mexico are listed. Find the mean, median, mode, range, Q1, Q2, variance, and standard deviation of the flight prices.
Do you agree that "if two events are mutually exclusive then these two events will be independent"? Why? Provide one business-related example each, with explanation, for mutually exclusive and independent events.
The player must pay $4 if she draws a green marble. Find the expected value in the games.
Let p(x)= x/15, x = 1, 2, 3, 4, 5 be probability function of a random variable X. Determine F, the distribution function of X, and sketch its graph.
A customer of the retailer bought it for $24. What was the markup on selling price for each member of this product's channel of distribution?
construct a frequency distribution table for these data. what type of graph would be appropriate to show the frequency distribution for these data?
According to the revenue, sales, price, average and standard deviation that already do it and analyse the reason of your decision
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