A recent survey on food labeling found that 41% of a random sample of 1,008 American...

Transcribed Image Text:

A recent survey on food labeling found that 41% of a random sample of 1,008 American adults report looking for information on food labels about whether the food they are purchasing is organic. Use this survey result and the table below to give 70%, 80%, 90%, and 99% confidence intervals for the proportion of all adults who feel this way. (Round your answers to three decimal places.) Critical values of the Normal distributions Confidence level C Critical value z* Confidence level C Critical value z* 1.64 70% 80% 90% 99% 50% eBook 60% 70% 80% x to x to X to X to xx X X 0.67 0.84 1.04 1.28 90% 95% 99% 99.9% 1.96 2.58 3.29 What do your results show about the effect of changing the confidence level? As the confidence level increases, the width of the interval increases A recent survey on food labeling found that 41% of a random sample of 1,008 American adults report looking for information on food labels about whether the food they are purchasing is organic. Use this survey result and the table below to give 70%, 80%, 90%, and 99% confidence intervals for the proportion of all adults who feel this way. (Round your answers to three decimal places.) Critical values of the Normal distributions Confidence level C Critical value z* Confidence level C Critical value z* 1.64 70% 80% 90% 99% 50% eBook 60% 70% 80% x to x to X to X to xx X X 0.67 0.84 1.04 1.28 90% 95% 99% 99.9% 1.96 2.58 3.29 What do your results show about the effect of changing the confidence level? As the confidence level increases, the width of the interval increases

Answer rating: 100% (QA)

Answer 1 To import the CSV file housecsv into R I used the readcsv function I assigned the data to a variable called house The first row of the data set was imported as the variable names The readcsv ... View the full answer