NARRBEGIN: Number of Horses
Number of Horses
the Random Variable $\ge$

question 160

Short Answer

NARRBEGIN: Number of Horses
Number of Horses
The random variable X represents the number of horses per family in a rural area in Iowa, with the probability distribution: p(x) = 0.05x, x = 2, 3, 4, 5, or 6.NARREND
-{Number of Horses Narrative} Find the following probabilities:
a.P(X $\ge$ 4)
b.P(X > 4)
c.P(3 $\le$ X $\le$ 5)
d.P(2 < X < 4)
e.P(X = 4.5)

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Definitions:

Standard Deviation

A means of gauging the extent of distribution or variation within a group of data.

Bacteria

Bacteria are microscopic, single-celled organisms that can be found in virtually all environments and can be beneficial, neutral, or harmful to other forms of life.

Standard Normal Distribution

The standard normal distribution is a normal distribution with a mean of 0 and a standard deviation of 1, used in hypothesis testing and probability determination.

Normal Random Variable

A variable that follows a normal distribution, characterized by its bell-shaped curve, where the mean, median, and mode are all equal.