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2. The amount of the demand of deposits made daily in a certain banking agency, is random with normal distribution of average 120 currency units and variance 64. Determine: (a) the percentage of days on which the amount of demand deposits is between 105 and 135 currency units. (B) the probability that the amount of deposits is higher than the average, in the days when this amount is less than 125 currency units.

2. The amount of the demand of deposits made daily in a certain banking agency, is random with normal distribution of average 120 currency units and variance 64. Determine: (a) the percentage of days on which the amount of demand deposits is between 105 and 135 currency units. (B) the probability that the amount of deposits is higher than the average, in the days when this amount is less than 125 currency units.

A First Course in Probability (10th Edition)
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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GROUP A: 2. The amount of the demand of deposits made daily in a certain banking agency, is random with normal distribution of average 120 currency units and variance 64. Determine: (a) the percentage of days on which the amount of demand deposits is between 105 and 135 currency units. (B) the probability that the amount of deposits is higher than the average, in the days when this amount is less than 125 currency units. wwwwwwwww (C) the average and variance of the amount of demand deposits made weekly (consider that a week has 5 days). (D) the lower limit of the amount of deposits which is 90% of the days.
Transcribed Image Text:GROUP A: 2. The amount of the demand of deposits made daily in a certain banking agency, is random with normal distribution of average 120 currency units and variance 64. Determine: (a) the percentage of days on which the amount of demand deposits is between 105 and 135 currency units. (B) the probability that the amount of deposits is higher than the average, in the days when this amount is less than 125 currency units. wwwwwwwww (C) the average and variance of the amount of demand deposits made weekly (consider that a week has 5 days). (D) the lower limit of the amount of deposits which is 90% of the days.
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