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please show solution. thankyou. The time each week an understudy utilizes a lab PC is normally distributed, with a mean of 6.2 hours and a

please show solution. thankyou.
The time each week an understudy utilizes a lab PC is normally distributed, with a mean of 6.2 hours and a standard deviation of 0.9 hour. An understudy is randomly chosen. Discover the likelihood that the understudy utilizes a lab PC somewhere in the range of 4 and 7 hours out of each week. Answers for probabilities should be in 4 decimal places

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