Average of the box equals
Four hundred draws are made at random with replacement from a box. The average of the draws is 152.4, and their SD is 18. Someone claims that the average of the box equals 150. Is this plausible?
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According to a recent survey, about 33% of Americans polled said that they would likely purchase reusable cloth bags for groceries to reduce plastic waste. Suppose 45 shoppers are interviewed a local supermarket.
A biologist wishes to estimate the effect t of an antibiotic on the growth of a particular bacterium by examining the mean amount of bacteria present per plate of culture when a fixed amount of the antibiotic is applied.
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Sixty-four measurements are made on the speed of light. These average out to 300.007 and the SD is 10, the units being kilometers per second. Gauss model is assumed with no bias. (a) The speed of light is estimated as__________; this estimate is l
One of Mendel's breeding trials came out as follows. Make a Chi-square test to see whether these data were fudged.
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