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What is the standardized score of a mean of 230 taken from a sample of 25 from a normal population that has a mean of 211 and standard deviation equal to 46?
A. -2.07
B. -0.41
C. 0.41
D. 2.07
In a certain distribution of numbers the mean is 60 with a standard deviation of 8. Use Chebyshevs theorum to tell the probability that a number lies in each interval.
If 25 quarters are randomly selected calculate an interval that will include 95% of all the mean weights of randomly selected samples of quarters of size 25.
Based off the three requirements that must be met before an analysis of variance test (ANOVA) can be used: Samples must be randomly selected from the populations to be evaluated.
Such things as historical documents, newspaper reports, TV and radio broadcasts, when used in research, represents
Each party's position must be statistically sound. Include as suitable graphs, computations, and statistical tests.
Based on data from a car bumper sticker study, when a car is randomly selected, the number of bumber stickers and corresponding probabilities are shown below.
the measurements of weight of 100 units of a product manufactured by two parallel processes have same mean but the
To investigate this belief, he randomly samples 41 adult women and records their weights. The scores have a mean of 111 lbs. and a standard deviation of 12.4. A local census taken several years ago shows the mean weight of adult women was 115 lbs.
question a bag contains a total of 20 batteries of which six are defective. selecting two at random without replacement
Consider different types of qualitative data collection and analysis methods and the ways in which they can support business decision making and strategies.
Explain the difference between the null and alternative hypothesis. Which one can be proven in a statistical sense?
Five persons donate blood at the clinic on a particular day. Find the probability that at least one of the five does not have Rh+ blood.
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