The time taken by a team to complete the assembly of an electrical component is found to be normally distributed, about a mean of 110 minutes, and with a standard deviation of 10 minutes. (a) Out of a group of 20 teams, how many will complete the assembly: (i) within 95 minutes. (ii) in more than 2 hours. (b) If the management decides to set a ‘cut off’ time such that 95% of the teams will have completed the assembly on time, what time limit should be set?
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Answer:
The answer is 0. 4875 – 0.3554
= 0.1321
Step-by-step explanation:
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