[Solution] A bank president is interested in the average number of credit cards that a savings account customer has. Bank records revealed the following percentages
Question: A bank president is interested in the average number of credit cards that a savings account customer has. Bank records revealed the following percentages (probabilities) of credit cards owned.
Number of Percentage
Cards, X P(X)
0 19%
1 46%
2 35%
100%
Find the standard deviation of this distribution.
Deliverable: Word Document 
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(See Solution) Find: P(0.8 < z
(See Solution) The national average SAT score is 1025. Assuming
Power Calculator Minimum Sample Size - Testing for One Mean - MathCracker.com