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Clotting time is 7.45 seconds with a standard deviation of 3.6 second. what is the probability that an individuals clotting time will be more than 3 seconds and less than 11? Assume a normal distribution
Draw and label distribution used and position of values found.
which is a value often used for the upper limit of the range of normal values. What do the results suggest about the sample group?
Neither subjects nor researcher knew who was assigned to what. Determine three terms explain the experimental design?
When making the histogram from frequency table, (a) what goes along the bottom, (b) what goes along the left edge, and (c) what goes above each value?
Below is a normal plot of residuals from a regression. Does the plot indicate any problems with the assumption that the residuals are Normally distributed
This indicates that about 80 out of 100 similarily constructed intervals would include the population porportion. (true or false)
Determine the distribution of X? Determine its parameters?
Suppose 1.5 percent of the antennas on new Nokia cell phones are defective. For a random sample of 200 antennas, find the probability that:
Heights of 18-year-old men are approximately normally distributed, with mean 68 inches and standard deviation 3 inches.
We wish to create this mean value interval for selling price with 95% confidence level. Find out the best point estimate (average) for selling price. Critical t-value(s) associated with 95% confidence level.
We are interested in testing to see if the variance of a population is less than 7. The correct null hypothesis is:
You are running a chi-squared test. You have 2 groups with 3 characteristics each, what would your critical value be with an alpha of .025?
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