Question: anamh Exercise 07.15 Algorithm Question: Exercise 07.15 Algorithmie 1.0.21 Partially Correct 2.0.43 o Check My Work Clicked: 1 Time 3.0.43 4.0.34 Check My Work 5.0.00

anamh Exercise 07.15 Algorithm Question: Exercise 07.15 Algorithmie 1.0.21 Partially Correct 2.0.43 o "Check My Work Clicked: 1 Time 3.0.43 4.0.34 Check My Work 5.0.00 5.0.43 7.043 61 85 81 71 21 The National Football League (NFL) polls fons to develop a rating for each football game. Each game is rated on a scale from o (forgettable) to 100 (memorable). The fan ratings for a random sample of 12 games follow 58 73 58 83 a. Develop a point estimate of mean fan rating for the population of NFL games (to 2 decimals), 68.08 b. Develop a point estimate of the standard deviation for the population of NFL games (to 4 decimals). 4914.2 78 74 74 3.0.43 o 4.0.31 Check My Work 50.00 O 6.0.43 People end up tossing 12% of what they buy at the grocery store (Reader's Digest, March 2009). Assume this is the true population o proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. Use 2-table. 2. Show the sampling distribution of (p), the proportion of groceries thrown out by your sample respondents (to 4 decimals) 7.0.43 Can assume to be normally distributed because np and (1-2)5 D standard error of the proportion of p) - 0.0139 d. What is the probability that your survey will provide a sample proportion within 1.03 of the population proportion (to 4 decimals)? .7154 c. What is the probability that your survey will provide a sample proportion within 1.015 of the population proportion (to 4 decimals)? 0.7166 40.34 Check My Work 5.0.60 6.00 The Food Marketing Institute shows that 18% of households spend more than $100 per week on groceries. Assume the population proportion is p = 0.18 and a sample of 800 households will be selected from the population. Use P-table 6. Calculate otp), the standard error of the proportion of households spending more than $100 per week on groceries (to 4 decimals). 7.0.0 0.18 1. What is the probability that the sample proportion will be within +/-0.03 or the population proportion (to 4 decimals)? c. What is the probability that the sample proportion will be within +/- 0.03 of the population proportion for a sample of 1,200 households (to 4 decimals)

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