Purchase Solution

Hypothesis for Experimental Group Receiving Instructural Program

Not what you're looking for?

Ask Custom Question

Twenty students randomly assigned to an experimental group receive an
instructional program; 30 in a control group do not. After 6 months, both groups
are tested on their knowledge. The experimental group has a mean of 38 on the
test (with an estimated population standard deviation of 3); the control group
has a mean of 35 (with an estimated population standard deviation of 5).

Using the .05 level, what should the experimenter conclude?

(a) Use the steps of hypothesis testing,
(b) sketch the distributions involved, and
(c) explain your answer to someone who is familiar with the t test for a single sample but not
with the t test for independent means.

Purchase this Solution
Solution Summary

The solution provides a hypothesis testing for experimental group receiving instructural program.

Purchase this Solution
Free BrainMass Quizzes
Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

View More Free Quizzes
Related BrainMass Solutions

  • Hypothesis for a new company program to teach reading to ele

    401798 Hypothesis for a new company program to teach reading to elementary students 1. Suppose that you work for a company that has just created a program designed to teach reading to elementary students.

  • Examining experimental design

    You have access to two clasrooms: describe the hypothesis, participants, experimental group, control group, independent variable and how you can make the two groups equivalent at the start of the experiment.

  • Statistical Analysis of a Randomized Clinical Trial

    Experimental 2. What was the mean post-test empowerment score for the control group? 3. Compare the mean baseline and post-test depression scores of the experimental group. Was this an expected finding? Provide a rationale for your answer. 4.

  • Independent sample t test

    153221 T Test, Hypothesis Test or Null Hypothesis Twenty students randomly assigned to an experimental group receive an instructional program; 30 in a control group do not. After 6 months, both groups are tested on their knowledge.

  • t-test for independent means

    184987 T-Test for Dependent or Independent Means 20 students picked randomly for an experimental group to receive instructional program. 30 students chosen as control group do not receive instructional program.

  • Statistics: What Should the Experimenter Prove?

    Twenty students randomly assigned to an experimental group receive an instructional program; 30 in a control group do not. After 6 months, both groups are tested on their knowledge.

  • HIV Intervention Study Design

    change and comparing outcomes for individuals receiving program activities with outcomes for a similar group of individuals not receiving program activities (Moore, 2008).

  • Statistics - Hypothesis Testing

    One store of each pair (the experimental group) was exposed to the sales campaign, and the other member of the pair (the control) group was not.

  • Managerial Hypotheses Testabilities

    We would firstly need to take the time to randomly assign workers to either the control group, or the experimental group. And then we would need to wait for the training program to end. Then, we need to wait for the 3 month test period to end.

View More Related Solutions