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1. There are 23 people at a party. Explain what the probability is that any two of them share the same birthday.
2. A cold and flu study is looking at how two different medications work on sore throats and fever. Results are as follows:
Analyze the data and explain which one would be the better medication for both a sore throat and a fever.
3. The United States employed a statistician to examine damaged planes returning from bombing missions over Germany in World War II. He found that the number of returned planes that had damage to the fuselage was far greater than those that had damage to the engines. His recommendation was to enhance the reinforcement of the engines rather than the fuselages. If damage to the fuselage was far more common, explain why he made this recommendation.
the random variable x representing the number of accidents in a certain intersection in a week has the following
What is the probability that the person in the ith position, 1 ≤ i ≤ b+g, is a girl?
Suppose 18 custopmers are selected at random. What is the proability that exactecly ten customers will ask for hot peppers?
Enlarged to 14 measurements, by including two additional measurements having a common value of 40 each. Find the standard deviation of the sample of 14 measurements.
suppose you will perform a test to determine whether there is sufficient evidence to support a claim of a linear
In general, when the dependent variable is neither interval nor ratio in level of measurement -- i.e., is not numeric -- a nonparametric statistical test is required to test the null hypothesis.
computing a two-independent sample t-test is appropriate when?a different participants are assigned to each groupb the
What is the probability that an ethnic group member is assigned to each type of job? What is the probability that no ethnic group member is assigned to a type 4 job?
The following frequency distribution reports the number of frequent flier miles, reported in thousands, for employees of Brumley Statistical Consulting, Inc. during the first quarter of 2004.
Assuming that the store's sales are a representative sample of the stereo systems produced by the three manufacturers, use the 0.025 level of signifi- cance in testing whether the population percentages of warranty service returns could be equal.
Find the expected frequency to test the claim that walking and low, moderate, and high blood pressure are not related. Round to the nearest tenth if necessary.
Illustrate a quantitative assessment of what our charts would look like and what these new targets would do to our operations.
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