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20 May, 00:11

Meena Chavan Corp.'s computer chip production process yields DRAM chips with an average life of 2,000 hours and sigma = 120 hours. The tolerance upper and lower specification limits are 2, 600 hours and 1,700 hours, respectively. Based on the given information, the process capability ratio Cp = ?

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  1. 20 May, 00:16
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    The correct answer is 1.25.

    Explanation:

    According to the scenario, the given data are as follows:

    Upper specific limit = 2,600 hours

    Lower specific limit = 1,700 hour

    Standard deviation = 120 hours

    So, we can calculate the capability ratio by using following formula:

    CP = (Upper specific limit - Lower specific limit) : (6 * deviation)

    = (2,600 hours - 1,700 hours) : (6 * 120)

    = 900 hours : 720

    = 1.25
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