Mathematics, 05.05.2020 20:18, ashlon98
Suppose you are working in an insurance company as a statistician. Your manager asked you to check police records of car accidents and out of 576 accidents you selected randomly, teenagers were at the wheel in 120 of them. (a) Construct a 95% confidence interval for the percentage of all auto accidents that involve teenage drivers. (b) Explain your findings to your manager. (c) Before you were hired in the company, the percentage of teenagers who where involved in car accidents was 18%. Your manager wants you to see if the percentage of teenagers has changed since you join the company. Perform an appropriate hypothesis test using α = 0.05 and Interpret your results to your manager. (d) Use α = 0.1 and repeat part (c).
Answers: 1
Mathematics, 22.06.2019 00:00, lasardia
At a pizza shop 70% of the customers order a pizza 25% of the customers order a salad and 15% of the customers order both a pizza and a salad if s customer is chosen at random what is the probability that he or she orders either a pizza or a salad
Answers: 1
Mathematics, 22.06.2019 03:20, achsahjosey
Zed is making a centerpiece for his dining room table by putting sand in a cube-shaped vase. the vase is 0.25 meters in length, width, and height. he bought 25 kg of sand. assume the density of dry sand is 1,602 kgm3. what is the volume of the sand that zed purchased? the volume of the sand is approximately m3. enter your answer as the number that correctly fills in the blank in the previous sentence. if necessary, round your answer to six decimal places, like so: 42.536475
Answers: 1
Suppose you are working in an insurance company as a statistician. Your manager asked you to check p...
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