Suppose the force acting on a column that helps to support a building is a normally distributed random variable ?X ?with mean value 15.0 kips and standard deviation 1.25 kips. Compute the following probabilities by standardizing and then using Table A.3. a. P(X ? 15) b. P(X ? 17.5) c. P(X ? 10) d. P(14 ? X ? 18) e. P(|X – 15 | ? 3 )

PSYCH STATS POWERPOINT 5 ● the standard deviation tells us the typical, or standard, distance from the mean ● describes how spread out scores are in a distribution ● if the standard deviation is small, there’s not a lot of variability ○ if the standard deviation is big, there’s a lot of...