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Posted: **Wed May 11, 2022 9:13 pm**

: An Engine Manufacturer Produces A Batch Of 2000 Small Engines With Mean Running Life Of 1000 Hours With A Standard Devi 1 (27.25 KiB) Viewed 24 times

: An Engine Manufacturer Produces A Batch Of 2000 Small Engines With Mean Running Life Of 1000 Hours With A Standard Devi 2 (26.52 KiB) Viewed 24 times

: An Engine Manufacturer Produces A Batch Of 2000 Small Engines With Mean Running Life Of 1000 Hours With A Standard Devi 3 (26.82 KiB) Viewed 24 times

: An Engine Manufacturer Produces A Batch Of 2000 Small Engines With Mean Running Life Of 1000 Hours With A Standard Devi 4 (24.44 KiB) Viewed 24 times

An engine manufacturer produces a batch of 2000 small engines, with mean running life of 1000 hours with a standard deviation of 200 hours Knowing that this follows a normal distribution 2. What is the probability that an engine fails in the first 700 running hours? [1 mark) b. What is the probability that an engine fails between 900 and 1300 running hours? (2 marks What is the probability that an engine runs for exactly 900 hours? (1 marlo didentity which of the following graphis represents the probability distribution function for hours and determine the values of A and B. Graph representing the probability density function is A. (2 marks

B A A AH 0 B 0 Figure B Figure A

1 A A slope A 0 B 0 B Figure C Figure D

A B (A 0 0 B Figure E Figure F