Grade 11 and 12 Mathematics (Moderator: geoffrey)

It is often the case that the amount of data available does not allow us to conclusively detect a ...

Started by tiffannnnyyyyyy

The formula for calculating a confidence interval for a population proportion is based on the rule ...

Started by mpobi80

Sampling methods and confidence intervals are routinely used for financial audits of large ...

Started by stephzh

In which of the following situations can a confidence interval provide useful information for making ...

Started by robinn137

Using the same sample data, the margin of error for an 80 confidence interval is __________ than the ...

Started by hbsimmons88

The formula for a confidence interval for the population mean is based on the rule for sample means, ...

Started by melly21297

You are taking a class with a large number of students. The professor notes that the midterm exam ...

Started by dbose

In practice the population standard deviation, which appears in the formula for the standard error ...

Started by ETearle

How should you collect your data in order to use it in a confidence interval for the difference of ...

Started by cool

Suppose instead of comparing independent measurements taken from two groups, you used a ...

Started by nevelica

To get the standard error for the difference in the means of two independent samples, you take the ...

Started by berenicecastro

Suppose you are comparing the proportion of people who successfully stopped smoking on each of two ...

Started by tsand2

If a researchers in an observational study attempts to control for a confounding variable, is it ...

Started by daltonest1984

Suppose you computed a 95 confidence interval for the difference in mean weight between two species ...

Started by jazziefee

You can determine confidence intervals for individual means or for the difference in two means (for ...

Started by s.tung

Suppose a new drug treatment for headaches is compared to placebo in a two independent group ...

Started by saliriagwu

Suppose you want to calculate a confidence interval to estimate the population mean. What happens if ...

Started by K@

A confidence level is a measure of how much confidence we have that the __________ we used to ...

Started by skymedlock

Suppose a confidence interval for the difference in mean weight loss for two different weight loss ...

Started by mpobi80

Suppose you have observed a sample mean and you want to know how likely it is that you would observe ...

Started by APUS57

If there is nothing new happening in the population, in the long run you should expect __________ of ...

Started by P68T

Suppose the jury determines that the evidence presented by the prosecutors does not prove beyond a ...

Started by Redwolflake15

What numerical value do you calculate that gives you the answer to the question of how unlikely the ...

Started by EY67

In general, the decision in a hypothesis test is based on a single summary of the data. What is this ...

Started by xroflmao

The only way to conclude that the alternative hypothesis is the likely one is to have enough ...

Started by Beheh