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A factory employs several thousand workers, of whom 30% are Hispanic. If the 15 members of the union executive committee were chosen from the workers at random, the number of Hispanics on the committee would have the binomial distribution with n = 15 and p = 0.3. (a) What is the probability that exactly 3 members of the committee are Hispanic? (b) What is the probability that 3 or fewer members of the committee are Hispanic?
what is the post-test probability of disease being present in a patient with a positive test result for test A if a cutoff value of 4.0 mg/ml is chosen?
Identify a real-life example or application of either the binomial or Poisson distribution. Specify how the conditions for that distribution are met.
The probability of contracting the kissing disease is .23 when one is exposed to a certain provocative environment. Sixty people are so exposed. What is the probability that no more than 10 are infected with this dreaded disease.
Suppose that you perform a significance test regarding a population mean and that the evidence does not warrant rejection of the null hypothesis.
Use a .05 significance level to test claims that quarters manufactured with the new equipment have weights with a standard deviation less than .061
Tthe sticks in the shipment fail to meet specifications. What is the probability that no more than 3 will be defective? What is the probably that more than 5 will be defective?
In playing the Lemonade Stand Game, Bob decreased his price per cup by two cents, from $.27 per cup to $.25 per cup. At the .05 level of significance, did net revenue increase?
Stem Cell Survey - Adults were randomly selected for a Newsweek poll. They were asked if they "favor or oppose using federal tax dollars to fund medical research using stem cells obtained from human embryos.
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.
A psychologist studied self-esteem scores and found the data set to be normally distributed with a mean of 50 and a standard deviation of 6. A raw score of 47 is associated with what percentile?
To determine if this is evidence that students perform worse under uncomfortable conditions, The P-value of a test
A new teaching tool developed by the Allied Health department is claimed to help 68% of students learn at a faster pace. State the null and alternate hypothesis if:
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