Do more than 50% of U.S. adults feel they get enough sleep? According to Gallup's December 2004 Lifestyle poll, 552 of U.S. adults surveyed said that that they enough sleep. The poll was based on a random sample of 1003 U.S. adults. Construct and interpret a 95% confidence interval. get a. Model b. Statistics c. Mechanics d. Interpret BIUA A Y LEXXEE 12pt Paragraph Y f E

The relationship between sample size and the width of a confidence interval may be explained by the concept of ______ . Select one: a. z score b. point estimates c. sampling error d. descriptive statistics

A newspaper reported that 80% of people say that some coffee shops are overpriced. The source of this information was a telephone survey of 100 adults. a. Identify the population of interest in this study. b. Identify the sample for the study. c. Identify the parameter of interest in the study. d. Find and interpret a 90% confidence interval for the parameter of interest. a. Identify the population of interest. Choose the correct answer below. coffee shops a telephone survey 80% of adults newspapers 100 adults adults b. Identify the sample. Choose the correct answer below. adults a telephone survey 100 adults 80% of adults newspapers coffee shops c. Identify the parameter of interest. Choose the correct answer below. A. p, the population proportion of adults who say that some coffee shops are overpriced B. o, the population variance of adults who say that some coffee shops are overpriced С. p, the sample proportion of adults who say that some coffee shops are overpriced D. X, the…

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