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In a winter of an epidemic flu, 2000 babies were surveyed by a well-known pharmaceutical company to determine if the company's new medicine was effective after two days. Among 120 babies who had the flu and were given the medicine, 29 were cured within two days. Among 280 babies who had the flu but were not given the medicine, 56 were cured within two days. Is there any significant indication that supports the company's claim of the effectiveness of the medicine?
Volunteers at a teenage distress center have been assigned based on their skills and expertise. It's assumed that 40% are drug related, 25% sex related, 25% stress, and 10% education. For the study sample of 120 calls per month were categoruzed as fo..
frans convenience marts are located throughout a metropolitan area. fran the owner would like to expand into other
Barker and colleagues (2012) compared 61 parents fo children who had a serious mental illness (SMI) to 321 parents of children withour such an illness. The researchers examined the parents’ reported levels of stress, their levels of a hormone called ..
Determination of Nominal, Ordinal, Interval, Ratio.Temperature is an example of what level of measurement.
Do students tend to improve their SAT Mathematics (SAT-M) score the second time they take the test? A random sample of four students who took the test twice received the following scores
Calculate the appropriate disease frequency rate. Show your work. The cumulative incidence rate in a population of 100,000 people where 9 new cases of disease were reported within 1 year.
Check whether the following sample has been drawn from a Normal population. Calculate 95% Confidence interval for population Variance and standard deviation.
Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 45 years of experience. Round to the nearest $100.
when 325 college students are randomy selected and surveyed its found that 117 own cars. construct a 99 confidence
To estimate the size of the bear population on the Keweenaw Peninsula, conservationists captured, tagged, and released 50 bears. One year later a random sample of 100 bears included only 2 tagged bears.
question there is some evidence that rem sleep associated with dreaming may also play a role in learning and memory
Since Richard has not attended the class recently, he doesn't know any of the answers. Assuming that Richard guesses on all 9 questions, find the probability that he will answer all questions incorrectly?
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