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LET’S PLAY NAME THAT TEST.. THEN, LET’S

LET’S PLAY NAME THAT TEST.. THEN, LET’S. DO THAT TEST!! Check condish Make Ho ha Null model Check yo stat wif model. 1. Love that chicken! In 2004, 46% of seniors ate the chicken nuggets. You took a sample this year and found that 18/31 ate the nuggets. Do students now like nuggets more?.

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LET’S PLAY NAME THAT TEST.. THEN, LET’S

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  1. LET’S PLAYNAME THAT TEST..THEN, LET’S DO THAT TEST!! Check condish Make Ho ha Null model Check yo stat wif model

  2. 1. Love that chicken! In 2004, 46% of seniors ate the chicken nuggets. You took a sample this year and found that 18/31 ate the nuggets. Do students now like nuggets more?

  3. 5. Burritos. The average burrito at MOE’s weight 2.3 lbs. You are wondering if A new burrito place down the street offers burritos as large. You take the following sample of burrito weights. • 2.1, 2.2, 1.4, 2.3, 2.1, 1.8, 1.4, 2.0 • Who has the larger burrito?

  4. 4. Survey Responses Few people who receive questionnaires in the mail actually fill them out and return them – often fewer than 10%! One researcher thinks he can improve the response rate by including a coupon good for a free pint of ice cream along with the questionnaire. The researcher believes that people will want the ice cream, and feel guilty if they don’t return the questionnaire. To test this conjecture he mails questionnaires with ice cream coupons to 150 randomly selected people. After two weeks 41 of the surveys have been returned.

  5. 10. Car Insurance An insurance company advertises that 90% of their accident claims are settled within 30 days. A consumer group randomly selects 104 of last year’s claims from the company’s files, and finds that only 89 of them were settled within 30 days. Is the company guilty of false advertising?

  6. 11. Cigarettes Some of the cigarettes sold in the US claim to be “low tar” and have a mean tar level of 11.5 mg with a std dev of 1.2 mg. Are all the companies (generic and regular popular brands) close to that average? Samples of 15 brands of each type were randomly chosen from the 1206 varieties (no kidding) that are marketed. Their tar contents (mg/cig) are listed in the table below. Is there a significant difference in the published data? • Type Milligrams of tar per cigarette • Regular 18 10 14 15 15 12 17 11 14 17 12 14 15 15 12 • Generic 9 5 10 4 8 9 9 3 7 12 6 10 8 11 8

  7. 14. Taxes Waiters are expected to keep track of their income from tips and report it on their income tax forms. The Internal Revenue Service suspects that one waiter (we’ll call him “John”) has been under-reporting his income, so they are auditing his tax return. An IRS agent goes through the restaurant’s files and obtains a random sample of 80 credit card receipts from people John served. The average tip size shown on these receipts was $9.68 with a standard deviation of $2.72. On his tax return John had claimed that his tips averaged $8.73. Based on this data, does the IRS have a case against him? Explain.

  8. 16. SENIORITIS. 35% of seniors earned less than an 80 in math Class in the second quarter. A sample of 65 seniors found that 33 scored under 80 in their math class on the quarter 3 interim report. Is this evidence of senioritis?

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