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In random samples, 46 of 400 tulip bulbs from one nursery failed to bloom and 18 of 200 tulip bulbs from another nursery failed to bloom. Use the χ2 statistic to test the null hypothesis θ1 = θ2 against the alternative hypothesis θ1 θ2 at the 0.05 level of significance
An environmental agency recently claimed more than 28% of consumers have stopped buying a certain product because of environmental concerns.
What are the class boundaries for the class with the largest frequency?
The Office of National Statistics have a calculator which allows you to check your own, personal, inflation rate. This is accessed via the home page of ONS ('Guidance & methodology' → 'Interactive content' → 'Personal inflation calculator')
What is the correlation coefficient & how strong is it
If the probability of no accidents during a 24 hour period is 0.1353, what is the mean number of accidents per 24 hour period?
Does the normal distribution yield a good approximation of the actual results?
To find weighted aggregate price index using Laspeyres and Paasche method.
The purchasing department has found an excellent global positioning system circuit card in Germany that can provide your firm with a competitive advantage in the marketplace.
Solve by completing the square: Solve using the square root property:
here is the data.131.15 135.69 130.91 124.54 129.64 128.77130.72 128.33 128.24 129.65 130.14 129.29128.71 129.00 129.39
A political strategists believes that less than 55% of voters in a certain state support a particular issue. He then commission s a poll of 500 voters and 54% of them support this issue. If a = .05, is the political strategist's belief warranted
where would you see descriptive statistics used in your work place? how would you define dependent and independent
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