The Mars candy company claims 13% of its M&M candies are brown, but Data Set 20 in Appendix B lists data from 100 M&Ms, and 8% of them are brown. Use the sample data to construct a 98% confidence interval estimate of the proportion of brown M&Ms. Does it appear the claimed rate of 13% rate is wrong? Why or why not?
Answer to relevant QuestionsMisleading Survey Responses In a survey of 1002 people, 70% said they voted in a recent presidential election (based on data from ICR Research Group). Voting records show 61% of eligible voters actually did vote. a. Find a ...Tattooed Democrats Find the sample size needed to estimate the percentage of Democrats who have tattoos. Use a 0.05 margin of error, use a confidence level of 99%, and use results from a prior Harris poll suggesting that 15% ...Refer to Data Set 15 in Appendix B. A flight is considered on time if it arrives no later than 15 minutes after the scheduled arrival time. The last column of Data Set 15 lists arrival delays, so on-time flights correspond ...The results in the screen display are based on a 95% confidence level. Write a statement that correctly interprets the confidence interval. A clinical trial was conducted to test the effectiveness of the drug zopiclone for treating insomnia in older subjects. Before treatment with zopiclone, 16 subjects had a mean wake time of 102.8 min. After treatment with ...
Post your question