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A survey of adults in a region found that 74?% have encountered fraudulent charges on their credit cards. You randomly select 100 adults in the region.
(a) Find the probability that the number who have encountered fraudulent charges on their credit cards is? (a) exactly 77 ?(b) at least 77 ?and? (c) fewer than 77 (Round to four decimal places as needed).
The revised version of the Minnesota Multiphasic Personality Inventory (MMPI-2) is the most frequently administered self-report personality measure.
What is the minimum sample size needed in order for you to be confident that your estimate is within 5 of ? Use the value for the population standard deviation of scores on this subsection.
Living-donor kidney transplants are becoming more common. Often a living donor has chosen to donate a kidney to a relative with kidney disease.
What is the expected value of X?- Write a sentence that interprets the expected value of X in this situation.- Create a table that gives the cumulative probability distribution for X.
describe the general purpose of a z score and explain how a z-score accomplishes this
Given that X‾ = 78, σ2 = 25, n = 10, and α = .05, test H0:µ > 80, assuming observations are randomly sampled from a normal distribution. Also, draw the standard normal distribution indicating where Z and the critical value are located.
in a trial of 250 patients who received 10-mg doses of a drug daily 30 reported headaches as a side effect.a obtain a
A company has been using the same advertising strategy for a number of years and over that time has had relatively constant monthly sales.
Bernoulli. Can we use probability models based on Bernoulli trials to investigate the following situations? Explain.
a soft drink dispenser is set to automatically dispense drinks and ice in 8 oz. cups. the machine is set to fill the
The distribution of dragons' wingspans is known to be bimodal. A very brave ecologist decides to measure the wingspans of wild dragons. He measures 100 samples with 60 dragons in each sample. According to the central limit theorem, what do we kno..
suppose there are 2 customers in the checkout line at marios used book emporium. each customer buys a number of books
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