A herbal tea company markets three different tea products, namely Mental Boost, Physical Power and Skin Remedy. The breakdown of the percentage contribution of each product to total sales (in units sold) in 2020 is as follows: •Mental Boost, 29% •Physical Power, 28% •Skin Remedy, 25% After a one-week Instaface marketing campaign, during which international celebrity Slim Harbashian posted numerous photos of herself drinking the Skin Remedy tea, a sample of 300 sales was analysed. The breakdown of the number of each type of tea sold is as follows: •Mental Boost, 95 units sold ●Physical Power, 70 units sold •Skin Remedy, 89 units sold •Other products, 46 units sold Use a=0.05 for all calculations in questions that follow. What is the critical value that should be used for this test? a. 9.348 b. 9.488 C. 7.815 O d. 7.779

In 2008 the Better Business Bureau settled 75% of complaints they received (uSa today,March 2, 2009). Suppose you have been hired by the Better Business Bureau to investigate the complaints they received this year involving new car dealers. You plan to select asample of new car dealer complaints to estimate the proportion of complaints the BetterBusiness Bureau is able to settle. Assume the population proportion of complaints settledfor new car dealers is .75, the same as the overall proportion of complaints settled in 2008.a. Suppose you select a sample of 450 complaints involving new car dealers. Show thesampling distribution of p.

In 2008 the Better Business Bureau settled 75% of complaints they received (uSa today,March 2, 2009). Suppose you have been hired by the Better Business Bureau to investigate the complaints they received this year involving new car dealers. You plan to select asample of new car dealer complaints to estimate the proportion of complaints the BetterBusiness Bureau is able to settle. Assume the population proportion of complaints settledfor new car dealers is .75, the same as the overall proportion of complaints settled in 2008.a. Suppose you select a sample of 450 complaints involving new car dealers. Show thesampling distribution of p.b. Based upon a sample of 450 complaints, what is the probability that the sample proportion will be within .04 of the population proportion?

In 2008 the Better Business Bureau settled 75% of complaints they received (uSa today,March 2, 2009). Suppose you have been hired by the Better Business Bureau to investigate the complaints they received this year involving new car dealers. You plan to select asample of new car dealer complaints to estimate the proportion of complaints the BetterBusiness Bureau is able to settle. Assume the population proportion of complaints settledfor new car dealers is .75, the same as the overall proportion of complaints settled in 2008.a. Suppose you select a sample of 450 complaints involving new car dealers. Show thesampling distribution of p.b. Based upon a sample of 450 complaints, what is the probability that the sample proportion will be within .04 of the population proportion?c. Suppose you select a sample of 200 complaints involving new car dealers. Show thesampling distribution of p.d. Based upon the smaller sample of only 200 complaints, what is the probability that thesample proportion…

In 2008 the Better Business Bureau settled 75% of complaints they received (uSa today,March 2, 2009). Suppose you have been hired by the Better Business Bureau to investigate the complaints they received this year involving new car dealers. You plan to select asample of new car dealer complaints to estimate the proportion of complaints the BetterBusiness Bureau is able to settle. Assume the population proportion of complaints settledfor new car dealers is .75, the same as the overall proportion of complaints settled in 2008.a. Suppose you select a sample of 450 complaints involving new car dealers. Show thesampling distribution of p.b. Based upon a sample of 450 complaints, what is the probability that the sample proportion will be within .04 of the population proportion?c. Suppose you select a sample of 200 complaints involving new car dealers. Show thesampling distribution of p.d. Based upon the smaller sample of only 200 complaints, what is the probability that thesample proportion…

The sales force for a large international company currently sells, on the average, $15,000 per salesperson each month. A sales manager has come up with a new sales incentive plan that she believes will increase the monthly sales for each salesperson. To test her new sales incentive plan she takes a Simple Random Sample (SRS) of 35 sales people, trains them in her new sales plan, and records each salesperson's monthly total sales for the next month. She will use this data to run the hypothesis test: H subscript O colon space mu less or equal than 15000H subscript A colon space mu greater than 15000 If the data yielded a Test Statistic (TS) equal to 2.032 (with the appropriate dfs, IF this TS is a T-number), then calculate the PValue (PV) for this TS. Enter your answer rounded off to the third decimal place, if necessary.

The Wall Street Journal's Shareholder Scoreboard tracks the performance of 1,000 major U.S. companies. The performance of each company is rated based on the annual total return, including stock price changes and the re investment of dividends. Ratings are assigned by dividing all 1,000 companies into five groups from A (top 20%), B (next 20%), to E (bottom 20%). Shown here are the one-year ratings for a sample of 60 of the largest companies. A B C D E 5 8 16 19 12 Do the largest companies differ in performance from the performance of the 1,000 companies in the Shareholder Scoreboard? Use a = 0.05. State the null and alternative hypotheses. O Ho: The largest companies differ in performance from the 1,000 companies. H₂: The largest companies do not differ in performance from the 1,000 companies. O Ho: The largest companies do not differ in performance from the 1,000 companies. H₂: The largest companies differ in performance from the 1,000 companies. O Ho: The proportions of the largest…

During the course of a year, the number of i-fod shuffles being manufactured went from 75,000 to 48,00. What was the percent of decrease in the number of i-Pod shuffles? О 56% 4% 40% 27% O 36% O O O

The Wall Street Journal's Shareholder Scoreboard tracks the performance of 1,000 major U.S. companies. The performance of each company is rated based on the annual total return, including stock price changes and the re investment of dividends. Ratings are assigned by dividing all 1,000 companies into five groups from A (top 20%), B (next 20%), to E (bottom 20%). Shown here are the one-year ratings for a sample of 60 of the largest companies. A 5 B C D E оно 9 15 19 12 Do the largest companies differ in performance from the performance of the 1,000 companies in the Shareholder Scoreboard? Use α = 0.05. State the null and alternative hypotheses. O Ho: The largest companies do not differ in performance from the 1,000 companies. H₂: : The largest companies differ in performance from the 1,000 companies. O Ho: The largest companies differ in performance from the 1,000 companies. Ha: : The largest companies do not differ in performance from the 1,000 companies. O Ho: The proportions of the…

The Wall Street Journal's Shareholder Scoreboard tracks the performance of 1,000 major U.S. companies. The performance of each company is rated based on the annual total return, including stock price changes and the re investment of dividends. Ratings are assigned by dividing all 1,000 companies into five groups from A (top 20%) , B (next 20%), to E (bottom 20%). Shown here are the one- year ratings for a sample of 60 of the largest companies. ABCD 5 8 15 20 12 Do the largest companies differ in performance from the performance of the 1,000 companies in the Shareholder Scoreboard? Use α = 0.05. State the null and alternative hypotheses. Ho: The proportions of the largest companies compared to the 1,000 companies are the same for at least one of the five groups. Ha : The proportions of the largest companies compared to the 1,000 companies are different for all five groups. Ho: The largest companies differ in performance from the 1,000 companies. H₂: : The largest companies do not differ…