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Posted: **Fri May 20, 2022 6:28 am**

: Q4 Normal Probability Distribution If The Operating Life Of An Electric Mixer Which Is Normally Distributed Has A Mean 1 (13.83 KiB) Viewed 46 times

Q4. Normal Probability Distribution If the operating life of an electric mixer, which is normally distributed has a mean of 2200 h and a standard deviation of 120 h, what is the probability that a single electric mixer will fail to operate at 1900 h or less (4)