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Seventy five percent of youths ages 12-17 have a systolic blood pressure lower than 136mm of mercury. What is the probability that a sample of 12 youths of that age group will include:
a. exactly 4 who have a blood pressure greater than 136
b. no more than 4 who have a blood pressure greater than 136
c. at least 4 who have a blood pressure greater than 136.
x1 = 100 and x2 = 127 successes were observed. What is the best point estimator for the difference ( p1-p2) in the two binomial proportions?
Develop a 99% confidence interval for the population proportion.
The samples do indicate that university A's students are younger than university B's; but is the difference significant at the 1% level?
In 2006, the Florida poll conducted by Florida International University asked whether current environmental regulations are too strict or not too strict. Of 1200 respondents. 229 said they were too strict. Find and interpret a (a) 95%. (b) 99% con..
What is the slope? What is the Y-intercept? Interpret the slopes and their meaning.
Interview about attitudes toward alcohol. You have given every student at the party the same chance to be interviewed: what is the chance? Why is your sample not an SRS?
question the following table gives a two-way classification based on gender and employment status of the civilian
The grade point average of the students at UTC is 2.80 with a standard deviation of 0.84. The grade point average of students at UTK is 2.4 with a standard deviation of 0.84. Which university shows a more dispersed grade distribution?
Cumulative frequency distribution, histogram, ogive and stem and leaf display. Calculate appropriate summary statistics. Incorporate these graphs and statistics into a well written summary
The following data (in pounds), which were selected randomly from a normally distrubuted population of values, represent mearsurements of a machine part that is supposed to weigh, on average, 8.3 pounds.
In a study shop, a set of data was collected to determine whether or not the proportion of defectives produced. Determine if the proportion of defectives is the same for all three shifts.
Find the value of k that makes f(x; y) a valid probability distribution.
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