# Tagged Questions

56 views

### Basic binomial question

The following appeared on an assignment of mine (already turned in). I contend that not enough information is given to provide an answer.... it seems pretty cut and clear to me. However, instructor ...
56 views

### Determining sample size with a proportion and binomial distribution

I am trying to learn some statistics using the book, Biometry by Sokal and Rohlf (3e). This is an exercise in the 5th chapter which covers probability, the binomial distribution, and Poisson ...
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### Problem plotting GLM data of binomial proportional data 2

I am trying to plot the predicting line for a GLM with proportional data. After having troubles with the example from "Crawley" I found this link: Problems plotting GLM data of binomial proportional ...
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### Pairwise comparisons on binomial data using pre-derived confidence intervals

I have a data set with 7 groups (months) of binomial data and am interested in comparing them pairwise. The unusual thing about it is that the mean proportions and confidence intervals were ...
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### Confidence Score for a Single Proportion [duplicate]

I was asked to calculate a confidence score for a single proportion representing a conversion rate. I saw a lot of documents that calculate confidence intervals for proportions based on the binomial ...
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### How to calculate a correlation between variables which are proportions of observations varying in sample size

Is it possible to calculate the correlation between two proportions, while accounting for the individual sample size that is used to calculate the proportion per individual? For example: How do I ...
63 views

### Estimating population size and a proportion

I am interested in the following sampling problem, which I will try to describe by a motivating example. Suppose we want to estimate how many people in a certain area, has blue eyes, how many have ...
115 views

### How to test if two coins have different biases?

probably a noob question because I'm a noob. I have two coins, A and B. For each coin I have a sample of the results I get by tossing it. My null hypothesis is that A has equal or higher probability ...
262 views

### Expectation of length of a confidence interval for a proportion

a) For a given significance-level $\alpha$, if we find $\mathop{\mathbb E}(b-a)$ such that $\mathbb P(a \leq X \leq b) \geq 1−\alpha$ for all possible values of $a$ and $b$, from the point of view of ...
291 views

### Distribution of a ratio of two proportions

$A$, $B$, $C$, $D$ are positive integers. $$A \sim Binomial(p_1, A+B)$$ $$A+C \sim Binomial(p_2, A+B+C+D)$$ My variable of interest is $p_1/p_2$ Could one analytically compute a distribution ...
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### How to compute Confidence Interval associated to a Binomial proportion's increase?

Not sure if you can help me but here's the problem. I have two binomial proportions A and B (95% CI) - $A = 2\% \pm 0.2\%,\quad B = 3\% \pm 0.2\%.$ In other words, B's proportion is 50% higher than ...