The average price of cell phones manufactured by Ahmadi, Inc. is $98 with a standard deviation of $12. Furthermore, it is known that the prices of the cell phones manufactured by Ahmadi are normally distributed.
a.What percentage of cell phones produced by Ahmadi, Inc. will have prices of at least $120.20?b.Cell phones with prices of at least $81.80 will get a free gift. What percentage of the cell phones will be eligible for the free gift?c.What are the minimum and the maximum values of the middle 95% of cell phone prices?
d.If 7,218 of the Ahmadi cell phones were priced at least $119.00, how many cell phones were produced by Ahmadi, Inc.?
What will be an ideal response?
| a. | 3.13% |
| b. | 91.15% |
| c. | Minimum Price $74.48 Maximum Price $121.52 |
| d. | 180,000 |
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