Answer to sampling techniques can be used to estimate physical quantities. to estimate a large quantity, you might measure a representative small sample and find the total quantity by "scaling up." to estimate a small quantity, you might measure several of the small quantities together and "scale down." in the following problem, describe an estimation technique. how many stars are visible in the sky on the clearest, darkest nights in your hometown?

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

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Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?