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The results of a recent survey indicated that 17.7% of all U.S. adults had taken a commercial airplaneflight during the last year. If we take a random sample of 40 adults, the probability is 0.37 that thesample proportion is greater than what number?
In the North American court system, a defendant is assumed innocent until proven guilty. In an ideal world, we would expect that the truly innocent will always go free, whereas the truly guilty ones will always be convicted.
Determine the probability of randomly selecting a person graduating with Master's degree who didn't major in Education.
Using variables below, (1) mention all research questions that would be replied with a Two Way ANOVA test, (2) make null hypotheses for these questions.
A random sample of 56 fluorescent light bubs has a mean life of 645 hours with a standard deviation of 31 hours.
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
Test, at the 5% level of significance, whether the population standard deviation of hours spent studying is less than 10. Use the Critical value approach.
Consider binomial distribution with 14 identical trials, and probability of success of 0.4.
The Director of Emergency Medicine at Big Mountain Medical Services is studying patient waiting time. Waiting time is defined as the time from when a patient enters the facility until seen by a physician.
For the most recent year available, the mean annual cost to attend a private university in the United States was $20,182. Assume the distribution of annual costs follows the normal probability distribution and the standard deviation is $4,400.
An accepted standard deviation for LSAT scores is 125. A random sample of 25 scores had an average of 1,375. Assume a significance level of 0.05. State the appropriate null and alternative hypotheses. Calculate the p-value to test the hypotheses.
There is enough evidence at a significance level of 10%, to conclude that the content average sodium this brand of corn flakes is 130 milligrams?
Normally distributed with the mean income of $30,000 and standard deviation of $3,000. Determine the income which separates top 25% from lower 75% of incomes?
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