Defects in computer hard-drives will usually render the entire computer worthless. For a particular model, the percent defective in the past has been 1%. If a sample size of 400 is taken, what would the 95.5% lower control chart limit be?

A. 0.00995

B. 0.09550

C. 0.00000

D. 0.01000

E. 0.00005

Question

Business

Broderick

4 February, 15:08

Defects in computer hard-drives will usually render the entire computer worthless. For a particular model, the percent defective in the past has been 1%. If a sample size of 400 is taken, what would the 95.5% lower control chart limit be?

A. 0.00995

B. 0.09550

C. 0.00000

D. 0.01000

E. 0.00005

+2

Answers (1)

Know the Answer?

Rebecca Perry · Answer 1

E. 0.00005

Explanation:

Here Average Fraction defective, p = 1% = 0.01

95.5% deviation means 2x

x = sqrt{x * (1 - x) / n) }

= sqrt{0.01 * (1 - 0.01) / 100}

= 0.00995

LCL = p - 2x

= 0.01 - 0.00995

= 0.00005

Therefore, The 95.5% lower control chart limit be 0.00005

Defects in computer hard-drives will usually render the entire computer worthless. For a particular model, the percent defective in the past has been 1%. If a sample size of 400 is taken, what would the 95.5% lower control chart limit be?A. 0.00995B. 0.09550C. 0.00000D. 0.01000E. 0.00005

Defects in computer hard-drives will usually render the entire computer worthless. For a particular model, the percent defective in the past has been 1%. If a sample size of 400 is taken, what would the 95.5% lower control chart limit be?

A. 0.00995

B. 0.09550

C. 0.00000

D. 0.01000

E. 0.00005