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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: · Sore throat - Medication A: Success rate - 90% (101 out of 112 trials were successful)
· Sore throat - Medication B: Success rate - 83% (252 out of 305 trials were successful) · Fever - Medication A: Success rate - 71% (205 out of 288 trials were successful)
· Fever - Medication B: Success rate - 68% (65 out of 95 trials were successful)
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.
a national caterer determined that 87 of the people who sampled their food said that it was delicious. a random sample
Please use synthetic division and the remainder theorem to find the indicated function values:
If the research question were defined as will buyers purchase more of a product in a blue colored or silver package? the most appropriate type of research would be
Choose a listed company starting with the first letter of your last name. For example, if your last name is Buffett then you may choose Bed Bath & Beyond Inc
The uniform distribution over the interval 7.5 to 10.5 gallons per minute. Find the probability that between 8.0 gallons and 9.0 gallons are pumped during a randomly selected minute.
the higher education research institute at ucla provides statistics on the most popular majors among incoming college
consider the following frequency distribution for a sample of 40 observationsclass frequency0-4
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.
What is the average information per symbol, H(X) without any blocks being formed? What is the average information per symbol, H(X) when the blocks are formed?
A study by Hewitt Associates showed that 79% of companies offer employees flexible scheduling. Suppose a researcher believes that in accounting firms this figure is lower.
Does this sample provide enough evidence to conclude that self-esteem scores for these adolescents are significantly different from those of the general population? Use a two-tailed test with x =.01.
1- in general when is the median preferred to the mean as measure of location?2- in general when is the mode preferred
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