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If 2 randomly chosen students are surveyed, what is the probability that both feel optimistic about their employment prospects? (b) If 2 randomly chosen students are surveyed and both feel optimistic about their employment prospects, what is the probability that both were math students?
Describe the given data show a seasonal effect using moving average method. Describe the data which show a seasonal effect.
In 280 trials with a professional touch therapist, correct responses to a question were obtained 1223 times. The P-value of 0.979 is obtained when testing the claim that p > 0.5 (the proportion of correct responses is greater than the proportion o..
Below are revenue and profit (both in $ billions) for nine large entertainment companies.
Why do you use the chi-square statistic? Explain. What type of data is used with chi square analysis? Explain. What are the hypotheses in a chi-square test for independence? Explain.
If 16 measurements are taken and the standard deviation is 2.1 mg/dl is there enough evidence to support the claim that her standard deviation is greatear than the target at a = 0.01?
A sample of 60 night-shift workers showed that the mean number of units produced was 351. At the .05 significance level, is the number of units produced on the night shift larger?
Phil has seen his shadow 104 times. (a) What is the probability that Phil will see his shadow on a randomly chosen Groundhog Day? (b) What kind of probability is this?
What is the probability that more than 585 of this year's entering class of 1807 will drop out during or at the end of their first year?
Is there a relationship between whether or not someone completed and returned their 2011 census report and their opinion of gun control?
Patients who were discharged during the year 2009. Using the information obtained from the sample to predict population characteristics with respect to malpractice litigation is an example of?
Let x = number of the ball obtained on any selection. Then the probability distribution for x is given by:
Will an SRS of size 1785 usually give a result p-hat within plus or minus 3 percentage points of the true population proportion? Explain.
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