Normal Distribution Calculator: http://onlinestatbook.com/2/calculators/normal dist.html2. Suppose the scores on a chemistry test were normally distributed with a mean of 78 and a standard deviationof 10.a. Label the horizontal axis appropriately on the Normalcurve at right.b. Find the probability that the student earned fewer than 75points.c. Find the probability that the student earned at least 70points.485868788898108d. Find the probability that the student earned between 80and 90 points. Shade the appropriate area in the figure, andthen determine the proportion.e. Find the probability that the student earned either less than80 points or more than 90 points.

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Answered: a. Label the horizontal axis…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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a. Label the horizontal axis appropriately on the Normal curve at right. b. Find the probability that the student earned fewer than 75 points. c. Find the probability that the student earned at least 70 points. 48