Question: Z = (X-u)/o = (120-100)/16 = 20/16 = 1.25 area (col C) = .1056 Therefore, 10.56 % of people have an IQ above 120. 1a)

Z = (X-u)/o = (120-100)/16 = 20/16 = 1.25 area (col C) = .1056

Therefore, 10.56 % of people have an IQ above 120.

1a) . You work as a statistician for a large national car manufacturer. You have just finished analyzing the data for how long it took 235 assemble line teams to install a transmission. The average number of minutes required to install a transmission was 12 minutes (st dev = 0.4). How many teams took more than 12.6 minutes to install a transmission?

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