4. A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1025 h with a standard deviation of 60 h. What percent of these light bulbs will last, less than 950 h. 5. Using the no. 4 problem, How many light bulbs will last less than 1000h? 6. A soda machine dispenses soda into 12-ounce cups. Tests show that the actual amount of soda dispensed is normally distributed, with a mean of 11.5 oz and a standard deviation of 0.2 oz. 7. What percent of cups will receive less than 11. 25 oz of soda?
4. A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1025 h with a standard deviation of 60 h. What percent of these light bulbs will last, less than 950 h. 5. Using the no. 4 problem, How many light bulbs will last less than 1000h? 6. A soda machine dispenses soda into 12-ounce cups. Tests show that the actual amount of soda dispensed is normally distributed, with a mean of 11.5 oz and a standard deviation of 0.2 oz. 7. What percent of cups will receive less than 11. 25 oz of soda?
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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Please answer the last items, 4 to 9. I need it asap. Thank you
Transcribed Image Text:Normal Distribution
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ile 7
S
a mean
their mean
SON OF 15.2 mm Hg.
ng of 110.5
her systolic
4. A manufacturer of light bulbs finds that one light bulb model has a mean life span of
1025 h with a standard deviation of 60 h. What percent of these light bulbs will last, less
than 950 h.
5. Using the no. 4 problem, How many light bulbs will last less than 1000h?
6. A soda machine dispenses soda into 12-ounce cups. Tests show that the actual amount
of soda dispensed is normally distributed, with a mean of 11.5 oz and a standard deviation
of 0.2 oz.
7. What percent of cups will receive less than 11. 25 oz of soda?
8. Tests show that the amount of soda dispensed is usually distributed, with a mean of
11.5 oz and a standard deviation of 0.2 oz. What percent of cups are between 12 oz. and
11 oz.?
9. A soda machine dispenses soda into 15-ounce cups. Tests show that the actual amount
of soda dispensed is normally distributed, with a mean of 11.5 oz and a standard deviation
of 1.2 oz. How many cups of soda dispensed more than 10 oz?
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