Let the Lifetime of a New Jet Ski Be Represented

question 94

Multiple Choice

Let the lifetime of a new Jet Ski be represented by a lognormal variable, where X is normally distributed.Let the mean of the lifetime of the Jet Ski be six years with a standard deviation of three years. What proportion of the Jet Skis will last less than seven years?

• A) 0.2877
• B) 0.3707
• C) 0.6293
• D) 0.7123

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Definitions:

Annual Energy Consumption

The total amount of energy used by a system, device, or facility within a year.

Seasonal Indexes

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Seasonal Indexes

Factors used to adjust or measure variations in data due to seasonal effects over specific periods, often applied in forecasting and economic analysis to account for seasonal patterns.

Regression Trend Line

is a statistical tool used in scatter plots to determine the relationship between two variables by drawing a straight line that best fits the data points.