# Question: The range for a set of data is estimated to

The range for a set of data is estimated to be 36.

a. What is the planning value for the population standard deviation?

b. At 95% confidence, how large a sample would provide a margin of error of 3?

c. At 95% confidence, how large a sample would provide a margin of error of 2?

a. What is the planning value for the population standard deviation?

b. At 95% confidence, how large a sample would provide a margin of error of 3?

c. At 95% confidence, how large a sample would provide a margin of error of 2?

**View Solution:**## Answer to relevant Questions

Refer to the Scheer Industries example in Section 8.2. Use 6.84 days as a planning value for the population standard deviation. a. Assuming 95% confidence, what sample size would be required to obtain a margin of error of ...The Consumer Reports National Research Center conducted a telephone survey of 2000 adults to learn about the major economic concerns for the future (Consumer Reports, January 2009). The survey results showed that 1760 of the ...In an effort to estimate the mean amount spent per customer for dinner at a major Atlanta restaurant, data were collected for a sample of 49 customers. Assume a population standard deviation of $5. a. At 95% confidence, what ...For the United States, the mean monthly Internet bill is $32.79 per household (CNBC, January 18, 2006). A sample of 50 households in a southern state showed a sample mean of $30.63. Use a population standard deviation of σ ...A consumer research group is interested in testing an automobile manufacturer's claim that a new economy model will travel at least 25 miles per gallon of gasoline (H0: μ > 25). a. With a .02 level of significance and a ...Post your question