Question: Almonte Inc a maker of low priced hair care products claims
Almonte, Inc., a maker of low-priced hair care products, claims that its hair spray lasts as long as the industry leader’s higher priced product. You take a sample of 60 applications of Almonte’s hair spray and 60 applications of the leading hair spray. Results: On average, the Almonte applications held for 12.7 hours, with a standard deviation of 1.4 hours. On average, the leading hairspray lasted 11.8 hours, with a standard deviation of 1.8 hours. Set up a hypothesis test to test whether the difference in sample means is statistically significant. Use a significance level of 2%. Report and explain your conclusion.
Answer to relevant QuestionsThe Regal Tire Company claims that its new eco-friendly tires last, on average, longer than the leading premium tire. The company reports that in a test involving 200 randomly selected Regal tires and 200 premium tires, the ...Cathy E, Ltd. and The Heath Company, two large British firms, send many of their employees to work for up to two years in their overseas offices. You recently interviewed a random sample of nine Cathy E employees and a ...The first Joint Canada/ US Survey of Health was conducted with a random sample of adults 18 and over. The sample size was 5200 Americans and 3500 Canadians. In the American sample, 42% reported that the quality of their ...Kentrex, a maker of game consoles, wants to determine whether a proposed new advertising campaign will change game players’ perception of its brand. To conduct the test, Kentrex selected a panel of six game players and ...The following table shows the number of inquiries for a sample of job opening announcements that your company has posted on two different websites, JobSite.com and Jobs!. com. a. Using a significance level of .05, construct ...
Post your question