Suppose a Population Has a Mean of 90 and a Standard

question 56

Multiple Choice

Suppose a population has a mean of 90 and a standard deviation of 28.If a random sample of size 49 is drawn from the population, the probability of drawing a sample with a mean of more than 95 is ___.

• A)0.1056
• B)0.3944
• C)0.4286
• D)0.8944
• E)1.0000

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Definitions:

Frequency Distribution

A Frequency Distribution is a statistical representation showing the number of observations within specified intervals or categories.

Scatter Plot

A graphical representation of data points on a two-dimensional plane, where each axis represents a different variable, used to observe relationships between variables.

Box-and-Whisker Plot

A graphical representation used in statistics to display the distribution of a dataset that shows the median, quartiles, and outliers.

STDEV.S(data range)

A statistical function that calculates the standard deviation for a sample set of data, measuring how much data points deviate from the mean.