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337 views

How to prove SPRT terminates with probability unity?

Can anyone provide me the easily explainable proof of 'SPRT terminates with probability unity'? To be more specific- 'Prove that SPRT terminates with probability unity'
Jamil Chowdhury 's user avatar
2 votes
1 answer
72 views

How to explain these jump-discontinuities in the expected stopping time of a SPRT?

Suppose a sequential probability ratio test (SPRT) with $$\alpha=P(\text{Type I error})=P(\text{Type II error})=\beta = 10\%$$ is used to decide between $$\ H_0: p=1/2\quad\text{vs.}\quad H_1: p=b\,$$ ...
r.e.s.'s user avatar
  • 301
2 votes
0 answers
269 views

Sequential testing of hypothesis

Let $\{X_n : n ≥ 1\}$ be a sequence of i.i.d random variables with common density $f_\theta(\cdot )$. Lets we want to test \begin{eqnarray} \begin{array}{cc} H_0: & \theta=\theta_0 \\ H_1: & \...
Masoud's user avatar
  • 1,339
1 vote
0 answers
35 views

Average Sample Number using Page's CUSUM procedure?

I am trying reproduce the Table 1 results from the page 12 using the equation given the page 13.To access the journal article please click https://arxiv.org/pdf/math/0605322.pdf. The corresponding ...
score324's user avatar
  • 335
2 votes
0 answers
30 views

Just how bad is it to determine when to stop data collection based on the resulting CI?

Say I want to be $95\%$ sure of the mean $\bar X$, with a CI of size $2$ ($1$ in each direction). The following is bad practice: collect data until $1.96\frac{s}{\sqrt{n}}=1$. What is the extent ...
Andrew NC's user avatar
  • 339
0 votes
0 answers
48 views

Closed form Pocock Rejection Region solution for joint MVN correlated RVs?

This is related to my previous question (link), but I have a simpler way of expressing it. Suppose $ \left( \begin{array}{ccc} \ Z_1 \\ Z_2 \end{array} \right)$ follows a Bivariate standard normal ...
Lewkrr's user avatar
  • 530