Mathematics, 08.11.2019 06:31 kennycooper3096
Aresearch engineer for a tire manufacturer is investigating tire life for a new rubber compound. she has built 10 tires and tested them to end-of-life in a road test. the sample mean and standard deviation are 61,492 and 2990 kilometers, respectively. assume population is approximately normally distributed. (a) can you conclude, using =0.05, that the standard deviation of tire life exceeds 3000 km ? yes ot no ?
Answers: 2
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Asquare has a perimeter of sixteen centimeters. what is the length of each of its sides? a. 8 cm c. 9 cm b. 4 cm d. 10 cm select the best answer from the choices
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Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60
Answers: 3
Aresearch engineer for a tire manufacturer is investigating tire life for a new rubber compound. she...
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