Question

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 = ?

Answer 1

The correct answer is 1.25.

Step-by-step 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