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How can we be certain that surveys and statistics that we hear about in the media are accurate samples and unbiased? Is there a way to dissect the information and determine if a probability sample was used?
Determine 95% confidence interval evaluate for average number of years served by all Supreme Court justices?
Find the probability that an eligible voter selected at random will have the following characteristics.
Is it necessary to assume a normal distribution on the population to estimate the value of the mean spending per day? Explain.
how many chocolate chip cookies will he need to sample to estimate the mean to within 2, what is a 99% confidence interval for the average number of chips per cookie?
This morning the office you are monitoring has eight office visits on the schedule. What is the probability that
Test for single mean - What do you conclude - Compute z and P
To conclude the effect of a new fertilizer on productivity of tomato plants one group of plants is treated with the new fertilizer as a second group is grown without such treatment. The number of ripe tomatoes produced by each group is counted.
Please address the following question: When is the mean the best measure of central tendency? When is the median the best measure of central tendency?
Find out optimal decision
In a study designed to test the effectiveness of acupuncture for treating migraine, 142 subjects were treated with acupuncture and 80 subjects were given a sham treatment. The numbers of migraine attacks for the acupuncture treatment group had a m..
Determine the probability that person selected has blood type O? Given that person selected is a male, determine the probability that their blood type is AB?
What is the probability of this actually happening?
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