Hypothesis Testing Problems – Question 10(Sussan Sound predicts that….)
by Question on ANOVASussan Sound predicts that students will learn most effectively with a constant background sound, as opposed to an unpredictable sound or no sound …
Tag: Hypothesis Testing
How to Perform Analysis of Variance (ANOVA) – Step By Step Procedure
In this lesson, we would look at the steps to follow to perform Analysis of Variance(ANOVA). This would be very clear and easy to follow. …
Hypothesis Testing Problems – Question 8(An automatic cutter machine…)
Question An automatic cutter machine must cut steel strips of 1200 mm lenght. From a preliminary data, we checked that the lenghts of the pieces …
Hypothesis Testing Problems – Question 4( We want to compare the heights of…
QuestionWe want to compare the heights in inches of two groups of individuals. Here are the measurements:X: 175, 168, 168, 190, 156, 181, 182, 175, …
Welch’s t-Test – How and When to Use it
Welch’s t-testThe Welch’s t-test is also called unequal variances t-test that is used to test if the means of two populations are equal. This test …
Hypothesis Testing Problem – Quesion 7 (Test wether cars get better mileage…)
Question 7 A study was performed to test wether cars get better mileage on premium gas than on regular gas. Each of 10 cars was …
Hypothesis Testing – How to Perform Paired-Sample t-Test (With Python Codes)
by What is paired-sample t-test? This is also called two-sample t-test or dependent samples t-test. This is a test used to compare the means of two …
Hypothesis Testing Problem – Quesion 6 (20 Students given diagnostic module…)
Question A sample of 20 students were selected and given a diagnostic module prior to studying for a test. And then they were given the …
Hypothesis Testing Problems – Question 5 ( A clinic provides a program to…
How to Perform Paired-Sample t-Test Question A clinic provides a program to help their clients lose weight and asks a consumer agency to investigate the …
Hypothesis Testing Problem – Question 2 ( A professor wants to know if…)
Question 2A professor wants to knowif her introductory statistics class has a good grasp of baic math. Six students are chosen at random form the …
Hypothesis Testing Problem – Question 1(In a population, the average IQ…
QuestionIn the population, the average IQ is 100 with a standard deviation of 15. A team of scientists want to test a new medication to …
Parametric Tests in Statistics – How to Know Which to Use
This is an easy topic to understand if you understand the basic concepts I am going to present in this article. So read carefully as …