@Take a : wda, ayala Math 25 (Spring 2018) water ayala &1 36/18 12:21 R Quiz iz:

Question

@Take a : wda, ayala Math 25 (Spring 2018) water ayala &1 36/18 12:21 R Quiz iz: Quiz 8 (5.4-5.5) This Question: 1 pt Submit 2of3(Ocon plete) This Quiz: 3 pts po A manufacturer claims that the life pan of its tires is 53,000 miles. You work for a consumer protection agency and you are testing these Sres Assume the lide spans of the res are normally distibuted. You select 100 tires at random and tost them The mean Ife span is 52,764 miles. Assume o -700 Complete parts (a) through (c) (a) Assuming the manufacturer's claim is correct, what is the probability that the mean of the sample is 52,764 miles or less? (Round to four decna place as nooded) (b) Using your answor from part (a), what do you think of the manufacturer's claim? The clam is (c) Assuming the manufacturers clam is true, would it be unusual to have an individual bire with a ife span of 52,764 miles? Why or why not? I beca ie the sample mean I be consdered uusual since t |.trh the targe of a usual event namely witin of the mean of the sample means - bocause 52.764 L M witn te rage of a usual event namely withn of the mean for an individual tire Enter your answer in the answer box

Explanation / Answer

@Take a : wda, ayala Math 25 (Spring 2018) water ayala &1 36/18 12:21 R Quiz iz: Quiz 8 (5.4-5.5) This Question: 1 pt Submit 2of3(Ocon plete) This Quiz: 3 pts po A manufacturer claims that the life pan of its tires is 53,000 miles. You work for a consumer protection agency and you are testing these Sres Assume the lide spans of the res are normally distibuted. You select 100 tires at random and tost them The mean Ife span is 52,764 miles. Assume o -700 Complete parts (a) through (c) (a) Assuming the manufacturer's claim is correct, what is the probability that the mean of the sample is 52,764 miles or less? (Round to four decna place as nooded) (b) Using your answor from part (a), what do you think of the manufacturer's claim? The clam is (c) Assuming the manufacturers clam is true, would it be unusual to have an individual bire with a ife span of 52,764 miles? Why or why not? I beca ie the sample mean I be consdered uusual since t |.trh the targe of a usual event namely witin of the mean of the sample means - bocause 52.764 L M witn te rage of a usual event namely withn of the mean for an individual tire Enter your answer in the answer box

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