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A researcher wishes to estimate with 95% confidence, the proportion of adults who have high speed internet. Her estimate must be accurate within 2% of the true proportion. a) Find the minimum sample size needed using the previous study that showed 58% had high speed internet. b) No preliminary estimate is available. n=
The experiment indicates a sample average diameter x BAR = 5.027 millimeters. Does this sample information appear to support or refute the engineer's conjecture?
Agency wants to select samples from 10 landfills. The director has 15 landfills from which she can collect samples. how many different samples are possible?
Explain how the margin of error is reported in the article, and how and why the margin of error impacts the results of the study.
State whether the null hypothesis should be rejected on the basis - Write down the hypothesis
Before giving the denition of the binomial probability distribution, try to derive it by using the sample-point approach. How?
A quality-control manager randomly selects 70 bottles of ketchup that were filled on S1 to assess the calibration of the filing machine. Determine the population study?
Normalized matrix for one decision criterion at Firm T is given below.
If 100 women are randomly selected, find the probability that they have a mean pregnancy between 266 days and 268 days.
A professor wants to determine if his class' anxiety decreases over the course of the semester. He uses a test to measure a random sample of all students enrolled at midterm and again at the end of the course.
Suppose 3 high school students are randomly selected from different schools. What is the probability that all graduate?
the dividend yield on shareholders funds of australias top 120 companies for the week ended friday 10 july 2009 is
Iindependently of one another. Two hundred seeds of such a cross are raised, and 142 turn out to be blue-flowering. Are the data consistent with the model?
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