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When we look at the null hypothesis and the alternative hypothesis represent two contradictory statements. They are said to be mutually exclusive; they can't both be true. Also, when the null hypothesis and alternative hypothesis are stated, they should be exhaustive. Can you think of an event that is not mutually exclusive?
An experimental drug is administered to 30 randomly selected indivduals, with the number of individuals responding favorably recorded. Does this represent a binomial experiment.
Compute the value of t. What is your decision regarding the null hypothesis? Briefly summarize your results.
At 0.05 level of significance, is there evidence of noteworthy difference in variation in sales among different aisle locations?
A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour flight is .02. What is the probability that (a) both will fail? (b) Neither will fail? (2) One or the other ..
A shipping form keeps 2 cars in readiness for local delivery. Because of demands on their time and the frequency of mechanical failure, the probability that a particular car will be available when needed is 0.9.
suppose you estimate a model obtaining wage 0.620 0.506 times educ 2.27 times female were wage is measured in
Time/CNN voter polls monitored public opinion for the presidential candidates during the 2000 presidential election campaign. One Time/CNN poll conducted by Yankelovich Partners, Inc., used a sample of 589 likely voters (Time, June 26, 2000). Assume ..
To test whether the population mean is less than a specified value.
When the effect of a level for one factor depends on which level of the other factor is present, use: Select one:
A pilot survey reveals that 5 of the 50 sampled hold two or more jobs. How many in the workforce should be interviewed to meet your requirements?
For a normal population with u. = 80 and a = 20 which of the following samples is least likely to be obtained?
the following data lists the average monthly snowfall for january in 15 cities around the us38 0 47 32 42 31 40 47 35
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