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How tall?
Students in a large class were asked to estimate the teacher's height in inches. Here's a histogram of their estimates:
You want a good guess of the professor's true height (or at least a good guess of how tall the students think the professor is). How would you summarize these data? Why? What might explain guesses as low as 56"?
question suppose that we have two events a and b with pa.50 pb.60 and pa union b .40a. find pa i bb. find pa i
What is the estimated standard error of the sample mean? Construct a 95 percent confidence interval for the population mean category fluency test score.
I want it to be analysed with descriptive statistics, means/medians of variables and chi-square analysis. Interpretations of the results, their links or interesting points among the results must be explain clearly.
The Minitab output for the Tukey Least Significant Difference multiple comparisons is below. Which means are different and similar
twelve different video games showing substance use were observed and the duration times of game play in seconds are
A sample survey of 54 discount brokers showed that the mean price charged for a trade of 100 shares at $50 per share was $33.77 (AAII Journal, February 2006).
To calculate the standard error of the mean for a variety, the experimenter calculated the standard deviation of the 50 observations and divided by.
If 15 subjects take a pre-test and a post-test with a mean change score of 1.5, and if the standard deviation of the comparison distribution is calculated to be .5, what is the t score?
Scores on a test have a mean of 73 and Q3 is 81. The scores have a distribution that is approximately normal. Find P90.
In a large clinical trial of 500 patients treated with a new drug, 40 reported sideeffects how many patients would need to be sampled to estimate the desired proportion to within a margin of error of 1%, using 98% confidence?
If you select a random sample of 200 children and observe the number of diagnostic services each of them receives, what is the probability that the mean number of diagnostic services is more than 1.72?
Do the independent variables correlate statistically significantly and practically with the dependent variable?
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