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A 1982 study indicated that 40% of young adults (18-25 years old) in the U.S. smoked cigarettes. In a later survey of 1500 young adults, 536 were found to be smokers. Do the data indicate that the smoking rate for young adults in the U.S. has decreased significantly? (alpha = 0.01)a) Dose the data indicate the smoking rate for young adults in the US has changed significantly?b) Use a confidence interval with appropriate level of confidence to conduct the test in a).
What is the probability that a debt for borrower with good credit is less than $10,000?
A traffic engineer is studying a stretch of road on a rural highway. At his observation point, an average of 12 vehicles per hour pass. The vehicles are independent of each other. 1. What is the probability that fewer than 5 vehicles pass betwee..
Suppose that two students named Gwyneth and Josephine have a total of 20 CDs in their room, consisting of 5 blues CDs and 15 reggae CDs. Each of the students chooses 7 CDs at random (without replacement), with all choices equally likely. (Thus, a..
How many people were polled?
Are they weak or strong correlations - what is the significance value and what does the significance value reveal about the data we have used?
Prepare a Scilab script to evaluate the volumetric flux of smoke in a plume produced by a fire of given HRR Q' The plume loses α percent of its heat by radiation and β percent by other means.
Hematologic data for patients with aplastic anemia
Define the hypothesis and find the standard error of the difference in the means also find the test statistic - Determine the required sample size to be able to use a 99% confidence interval.
question 1you are a data analyst working for the australian petrol pricing commissioner and have been requested to
The degree of flatness or peakedness of a population
part-1- first reset the lower limit to zero and the upper limit to 1000 and then click update.- now put 6 points
A decision maker's worst option has an expected value
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