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Question: NCAA rules for athletes. The National Collegiate Athletic Association (NCAA) requires Division II athletes to get a combined score of at least 820 on the Mathematics and Critical Reading sections of the SAT exam in order to compete in their first college year. In 2007, the combined scores of the millions of college-bound seniors taking the SATs were approximately Normal with mean 1017 and standard deviation approximately 210. What percentage of all collegebound seniors had scores less than 820?
4 7 7 5 2 9 7 6 8 5 8 4 1 5 2 8 7 6 6 9. (a) Determine three quartiles and (b) draw box-and-whisker plot of the data.
The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample mean and population mean for a sample of n = 100 is 2 points. Explain the difference in the standard error for the two samp..
Suppose 10 smokers are randomly selected and the number of smokers who started to smoke before the age of 18 is recorded. a) explain why this is binomial experiment.
Household with no children that is equal to the value obtained by the census. Give the z statistic (rounded to two decimal places) and the P-value. What do you conclude? (Use (alpha) = 0.10.) z = ? P-value =?
If a blue ball is selected you win nothing. Let X be the amount that you win. The expected value of X and let the random variable X be a random number with the uniform density curve given below
EPSY5607: Quantitative Methods in Research Assignment. State the null and alternate hypotheses of interest. aste relevant SPSS output here
the point of averages of a scatterplot of y against x is 14 1 . the sd of x is 6 and the sd of y is 7. the decimal
for a continuous random variable x p28 ? x ? 68 0.2 and px gt 68 0.11. calculate the following probabilities. leave
Using the .02 level of significance, conduct a five-step hypothesis testing procedure to determine if the new processes significantly reduced the wait time.
the average length of a new born baby is 20 inches with a standard deviation of 1 inch.b. if n100 what is the mean of
What sample size would be needed for an error of ± 1.5 with 98 percent confidence? (Data are from a project by MBA student Wendy Blomquist.)
The least squares simple linear regression line minimizes the sum of the vertical deviations between the line and the data points.
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