Let X Be Normally Distributed with Mean µ = 25

question 51

Multiple Choice

Let X be normally distributed with mean µ = 25 and standard deviation σ = 5. Find the value x such that P(X ≥ x) = 0.1736.

• A) −0.94
• B) 0.94
• C) 20.30
• D) 29.70

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Definitions:

Standard Error

The standard deviation of the sampling distribution of a statistic, measuring its accuracy as an estimate of the population parameter.

Confidence Interval

A range of values, derived from sample statistics, that is likely to contain the value of an unknown population parameter with a specified level of confidence.

Point Estimate

Single value used to estimate an unknown population parameter.

Population Parameter

A numerical value that represents a characteristic of an entire population, such as its mean or standard deviation.