At their inauguration, the ages of the first six presidents of the United States were 57, 61,
Question:
At their inauguration, the ages of the first six presidents of the United States were 57, 61, 57, 57, 58, and 57.
a. Find the mean age at inauguration, rounding to the nearest tenth. The mean of the most recent six presidents (Carter to Obama) was 55.3. Did the first six presidents tend to be a bit older or a bit younger than the most recent six presidents were?
b. Find the standard deviation of the ages at inauguration, rounding to the nearest tenth. The standard deviation of the most recent six presidents was 9.3 years. Did the first six tend to have more or less variation than the most recent six presidents had?
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a x 57 61 5757 58 57 6 347 6 578 Older 578 the mean age for the first six pres...View the full answer
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Related Book For 
Introductory Statistics Exploring The World Through Data
ISBN: 9780321978271
2nd Edition
Authors: Robert Gould, Colleen Ryan
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