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Assume the cost of an extended 100,000 mile warranty for a particular SUV follows the normal distribution with a mean of $1,390 and a standard
Assume the cost of an extended 100,000 mile warranty for a particular SUV follows the normal distribution with a mean of $1,390 and a standard deviation of $90. Complete parts (a) through (d) below. a) Determine the interval of warranty costs from various companies that are one standard deviation around the mean. The interval of warranty costs that are one standard deviation around the mean ranges from $ to $ (Type integers or decimals. Use ascending order.) b) Determine the interval of warranty costs from various companies that are two standard dev'ations around the mean. The interval of warranty costs that are two standard deviations around the mean ranges from $ to 8 (Type integers or decimals. Use ascending order.) c) Determine the interval of warranty costs from various companies that are three standard deviations around the mean. The interval of warranty costs that are three standard deviations around the mean ranges from $ to S (Type integers or decimals. Use ascending order.) Assume the cost of an extended 100,000 mile warranty for a particular SUV tollows the normal distribution with a mean of $1 ,390 and a standard deviation of $90. Complete parts (a) through (d) below. (Type integers or decimals. Use ascending order.) c) Determine the interval of warranty costs from various companies that are three standard deviations around the mean. The interval of warranty costs that are three standard deviations around the mean ranges from $ to 3 (Type integers or decimals. Use ascending order.) d) An extended 100,000 mile warranty for this type of vehicle is advertised at 31,750. Based on the prev'ous results, what conclusions can you make? (g: A. This warranty is better quality than warranties offered by competing companies due to the fact that it is more than three standard deviations above the mean. {:3 B. The $1,750 cost of this warranty is much higher than average due to the fact that it is more than three standard deviations above the mean. (j C. The $1 ,750 cost of this warranty is slightly higher than average due to the fact that it is more than three standard deviations above the mean. Q D. The $1,750 cost of this warranty must be an error in the advertisement because a data value cannot be more than three standard deviations from the mean
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