a lawn mower company produces 1500 machineslawn mowers in 2020 in an effort to determine how muc

1. We have a sample of 200 lawn mowers, but 51 owners are disqualified, so we have a valid sampl

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A lawn mower company produced 1,500 lawn mowers in 2020. In an effort to determine how much maintenance-free time consumers will have after purchasing a lawn mower, the company decided to conduct a study for the past year. First, they randomly sampled and contacted the owners of 200 lawn mowers. The company asked the owners to contact them when the first repair was needed for their lawn mowers. Owners who were no longer using their lawn mowers to mow their lawns were disqualified or not sampled. After 1 year had passed, it turned out that 187 owners reported the need for the first repair. However, the other 51 owners disqualified themselves. The average time until the first repair was 5.3 years for the samples deemed worthy of consideration. It is believed that the standard deviation is 1.28 years. If the company wants to advertise the lawn mower with a confidence level of 95%, what is the estimated average time per year of repair-free lawn mowing for these lawn mowers? What are the benefits of estimating the average time in this case? (analyze the answer you have obtained)

          A lawn mower company produced 1,500 lawn mowers in 2020. In an effort to determine how much maintenance-free time consumers will have after purchasing a lawn mower, the company decided to conduct a study for the past year. First, they randomly sampled and contacted the owners of 200 lawn mowers. The company asked the owners to contact them when the first repair was needed for their lawn mowers. Owners who were no longer using their lawn mowers to mow their lawns were disqualified or not sampled. After 1 year had passed, it turned out that 187 owners reported the need for the first repair. However, the other 51 owners disqualified themselves. The average time until the first repair was 5.3 years for the samples deemed worthy of consideration. It is believed that the standard deviation is 1.28 years. If the company wants to advertise the lawn mower with a confidence level of 95%, what is the estimated average time per year of repair-free lawn mowing for these lawn mowers? What are the benefits of estimating the average time in this case? (analyze the answer you have obtained)

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