# Statistical Quality Control-Sequential Sampling Plans (ISS (Statistical Services) Statistics Paper II (Old Subjective Pattern)): Questions 1 - 2 of 2

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## Question number: 1

» Statistical Quality Control » Sequential Sampling Plans

Appeared in Year: 2015

Essay Question▾

### Describe in Detail

Distinguish between the single sampling plan and double sampling plan. Discuss how the O. C curves can be used for comparing two sampling plans.

### Explanation

A single sampling plan in which a decision about the acceptance or rejection of a lot is based on one sample that has been inspected where double sampling plan when a decision about the acceptance or rejection of a lot has not been reached after single sample inspection from a submitted lot, a decision will always be reached when the second sampl

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## Question number: 2

» Statistical Quality Control » Sequential Sampling Plans

Appeared in Year: 2015

Essay Question▾

### Describe in Detail

To test the hypothesis against for the distribution

Develop the sequential probability ratio test.

### Explanation

Let x 1, x 2, …, x n are independently and identically distributed with distribution is

Let type I and type II errors are defined as

P (rejecting the lot when θ=θ 0) =α

P (accpeting the lot when θ=θ 1) =β

Under H 0 and H 1 the pmf is

Thus the likelihood ra

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