. Let X be the distance in kilometers that a tyre travels before being replaced. Historical data suggests that X is normally distributed with mean 60,000 and coefficient of variation 0.25. - What is the probability that a tyre is replaced after traveling more than 72,000 kilometers? The probability is? - Among all the tyres that were replaced in the last 5 years, what proportion of them travelled between 52,500 and 66,000 kilometers? The proportion is ? - A tyre manufacturer plans to offer a warranty to its customers. The warranty promises to refund the customer $100 if the tyre does not last for 45,000 kilometers. What is the expected cost per tyre of this warranty in dollars? The expect cost is ?
1. Let X be the distance in kilometers that a tyre travels before being replaced. Historical data suggests that X is
- What is the probability that a tyre is replaced after traveling more than 72,000 kilometers? The probability is?
- Among all the tyres that were replaced in the last 5 years, what proportion of them travelled between 52,500 and 66,000 kilometers? The proportion is ?
- A tyre manufacturer plans to offer a warranty to its customers. The warranty promises to refund the customer $100 if the tyre does not last for 45,000 kilometers. What is the expected cost per tyre of this warranty in dollars? The expect cost is ?
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