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40% of UNF students are male. Suppose you decide to randomly select 15 UNF students and observe if they are male or not.
a. Define the random variable X associated with this experiment and then calculate its variance.b. Calculate the probability that 5 students are males from the 15 selected.
In a shipment of 79 vials, only 17 do not have hairline cracks. If you randomly select 3 vials from the shipment, what is the probability that all 3 of the selected vials have hairline cracks?
Gigi has rolled a natural on four straight tosses of the dice. This excites the gamblers standing around the table.
Are there other methods besides ANOVA that can be used to evaluate whether the difference in means between TWO OR MORE samples is significant?
Find the z-score boundaries that separate a normal distribution as described in each of the following: the middle 20% from the 80% n the tails.
Can college conclude that students in new program are significantly different from rest of freshmen class? Use two - tailed test with a = 0.05.
An elevator has a design capacity of 2,560 pounds and a posted limit of 16 passengers. The weight of adults is approximately normal with a mean of 150 pounds and standard deviation of 20 pounds.
Critique the HR manager's planned approach and give him advice on how to proceed. You can assume that a reasonable estimate for the proportion of new hires that are happy with the company is .8.
How many citizens would need to be sampled if a 99% confidence interval was desired to estimate the true proportion to within 1%?
In answering this questions, set up and test appropriate hypotheses using D = 0.01. Construct a 99 percent confidence interval on the true mean difference in breaking strength.
part-11.1 a random sample of n 50 males showed a mean average daily intake of dairy products equal to 756 grams with a
You've two separate sets of data. From one set you calculate the standard error to be 500. From the other set, the standard error was 5.
the percentage of people exposed to a bacteria who become ill is 20. assume that people are independent. assume that
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