A local fast-food restaurant serves buffalo wings. The restaurant's managers notice that they normally sell the following proportions of flavors for their wings: 10 % Spicy Garlic, 30 % Classic Medium, 20 % Teriyaki, 20 % Hot BBQ, and 20 % Asian Zing. After running a campaign to promote their nontraditional specialty wings, they want to know if the campaign has made an impact. The results after 10 days are listed in the following table. Is there sufficient evidence at the 0.005 level of significance to say that the promotional campaign ha made any difference in the proportions of flavors sold?

An Office of Admission document claims that 55.9% of UVA undergraduates are female. To test this claim, a random sample of 215 UVA undergraduates was selected. In this sample, 58.5% were female. Is there sufficient evidence to conclude that the document's claim is false? Carry out a hypothesis test at a 4% significance level. A. The value of the standardized test statistic:  Note: For the next part, your answer should use interval notation. An answer of the form (−∞,?)(−∞,a) is expressed (-infty, a), an answer of the form (?,∞)(b,∞) is expressed (b, infty), and an answer of the form (−∞,?)∪(?,∞)(−∞,a)∪(b,∞) is expressed (-infty, a)U(b, infty). B. The rejection region for the standardized test statistic =    C. The p-value is:  D. Your decision for the hypothesis test:A. Do Not Reject ?1H1.B. Reject ?1H1.C. Reject ?0H0.D. Do Not Reject ?0H0.

A case-control study was conducted to examine the association between lung cancer and smoking in men. The case group contains 500 patients, who were diagnosed with lung cancer. Five hundred age-matched patients were recruited as controls. The study found that 50% of cases were regular smoking and the proportion is 20% among controls. a. Create a 2x2 table based on the given information

A quality-conscious disk manufacturer wishes to know the fraction of disks his company makes which are defective. Step 1 of 2: Suppose a sample of 1875 floppy disks is drawn. Of these disks, 1594 were not defective. Using the data, estimate the proportion of disks which are defective. Enter your answer as a fraction or a decimal number rounded to three decimal places. Answer How to enter your answer (opens in new window) Tables Keypad

A sample of Reese's pieces contains the following: 30 Orange, 40 Brown, 20 Yellow.  What is the proportion of orange? Round to two places.

A bakery sold a total of 300 cupcakes in a day, and 252 of them were chocolate flavored. What percentage of cupcakes sold that day were chocolate flavored?