Module 22 – Hypothesis Test for a Population Mean Lab (13 of 19 discussion 1) – Mod 22 Group 2

From 2020SP-MATH-160-6897

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Learn by Doing

In this lab you will learn how to use StatCrunch to conduct a hypothesis test for a population mean using StatCrunch.

Some features of this activity may not work well on a cell phone or tablet. We highly recommend that you complete this activity on a computer.

Here are the directions, grading rubric, and definition of high-quality feedback for the Learn by Doing discussion board exercises.

A list of StatCrunch directions is provided at the bottom of this page.

CONTEXT

A group of 75 college students from a liberal arts college were randomly sampled and asked about the number of alcoholic drinks they have in a typical week. The file containing the data is linked below. The purpose of this study (Links to an external site.) was to compare the drinking habits of the students at the college to the drinking habits of college students in general. In particular, the dean of students, who initiated this study, would like to check whether the mean number of alcoholic drinks that students at his college have in a typical week differs from the mean of U.S. college students in general, which is estimated to be 4.73.

VARIABLES

The number of alcoholic beverages a student consumes in a week.

DATA

Download the drinks (Links to an external site.) data file and then upload the datafile in StatCrunch.

PROMPT

The drinks datafile is available in the Data section below.

Let μ be the mean number of alcoholic beverages that students in the liberal arts college drink in a typical week. State the hypotheses.
Here is a histogram of the data. Can we safely use the t-test with this data? Explain.
$Histogram: strong peak on the left, no left tail, long right tail$
Perform the t-test using StatCrunch. (directions)
Copy and paste the information from the StatCrunch output window into your initial post.
Based on the P-value, state your conclusions in context. Use a 5% level of significance.
NOTE: You do not need to double the P-value for this two-tailed test. StatCrunch calculates the P-value for you.
Using the context of this scenario, explain the meaning of each of following items from the StatCrunch output for the hypothesis test.
1. Std. Err (standard error)
2. T-stat (T-score)
3. P-value

LIST OF STATCRUNCH DIRECTIONS

Each link will open in a new window. To return to this discussion, either close the new tab or select the tab for this discussion.

Create Your Stats-Class Folder in Canvas (You only need to do this once.)
Purchase StatCrunch (You only need to do this once.)
Open StatCrunch
Download Excel Data File
Upload Excel Data File to StatCrunch
Download StatCrunch Output Window (no screenshots; please use these directions)
Upload Files into Your Stat-Class Folder in Canvas
Copy & Paste a StatCrunch Table
Conduct a T-test Using StatCrunch

Here is a PDF document with all StatCrunch directions (Links to an external site.).

GRADING

To view the grading rubric for this discussion board, click on menu icon (three vertical dots) and then select show rubric. Please note, if viewing the course via the Canvas mobile app the rubric does not appear on this page.

TIPS FOR SUCCESS

- - Did you make a mistake in your initial post? No problem! Just be sure to reply to yourself and note any corrections that need to be made.
  - You are required to reply to two of your peers in this discussion; don’t forget to complete this requirement of the activity or you will lose points. Provide high-quality feedback to your peers.

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module 22 hypothesis test for a population mean lab 13 of 19 discussion 1 mod 22 group 2 1 was first posted on July 20, 2020 at 6:34 pm.
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