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Chapter 8: Q9 (page 372)

In Exercises 9鈥�12, refer to the exercise identified. Make subjective estimates to decide whether results are significantly low or significantly high, then state a conclusion about the original claim. For example, if the claim is that a coin favours heads and sample results consist of 11 heads in 20 flips, conclude that there is not sufficient evidence to support the claim that the coin favours heads (because it is easy to get 11 heads in 20 flips by chance with a fair coin).

Exercise 5 鈥淥nline Data鈥�

Short Answer

Expert verified

The result of 59% of adults whowould erase all of their personal information online if they could seem significantly high.

There is sufficient evidence to support the claim that most adults would erase all of their personal information online if they could.

Step by step solution

01

Given information

Referring to Exercise 5 BSC, out of 565 randomly selected adults, 59% would erase all of their personal information online if they could.

02

Conclusion

It is claimed that most adults would erase all of their personal information online if they could.

That is,

p>0.5

Since 59% is much higher than 50%, it appears to be unlikely to obtain a proportion of 59% in a sample when the true proportion is 50%.

Therefore, the result of 59% appears to be significantly high.

Thus, this suggests that there is evidence to support the given claim that the proportion of adults who would erase all of their personal information online if they could is greater than 50%.

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Most popular questions from this chapter

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Cadmium, a heavy metal, is toxic to animals. Mushrooms, however, are able to absorb and accumulate cadmium at high concentrations. The Czech and Slovak governments have set a safety limit for cadmium in dry vegetables at part per million (ppm). M. Melgar et al. measured the cadmium levels in a random sample of the edible mushroom Boletus Pinicola and published the results in the paper "Influence of Some Factors in Toxicity and Accumulation of Cd from Edible Wild Macrofungi in NW Spain" (Journal of Environmental Science and Health, Vol. B33(4), pp. 439 455). Here are the data.

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(Note: the sum of the data is 6.31 ppm. )
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