Help please!

1 2 3 4 5 6 7 8 9 70 17 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 20 30 31 32 33 34 35 36 37 38 39 40 QUESTION 8 The owner at a local restaurant wanted an estimate of what people were spending per meal. 40 sales receipts were randomly selected, examined. and recorded. The receipts showed that on the average people were spending about $60 per meal. The population records, to date, revealed that there was a $4 standard deviation on all the meals. The restaurant owner wanted to be 909% certain that they would receive the correct answer. o =? (4 Decimal) QUESTION 9 The owner at a local restaurant wanted an estimate of what people were spending per meal. 40 sales receipts were randomly selected, examined, and recorded. The receipts showed that on the average people were spending about $60 per meal. The population records, to date, revealed that there was a $4 standard deviation on all the meals. The restaurant owner wanted to be 90% certain that they would receive the correct answer. UCL =? (2 Decimal) QUESTION 10 The owner at a local restaurant wanted an estimate of what people were spending per meal. 40 sales receipts were randomly selected, examined, and recorded. The receipts showed that on the average people were spending about $60 per meal. The population records, to date, revealed that there was a $4 standard deviation on all the meals. The restaurant owner wanted to be 90% certain that they would receive the correct answer. LCL = ? (2 Decimal) QUESTION 11 A sales manager for an automobile parts retail store wanted to estimate the commission that could be expected from the following data. 2,200 2,500 2.400 1,600 1,500 2,000 2.100 2,300 he manager wanted to be 90% confident that the true mean was found