What is the exact significance level

Assignment Help Basic Statistics
Reference no: EM13703095

Review the SPSS output file which reports the results of the independent t-test to compare the mean price per 6-pack for regular vs. reduced calorie brands of wheat beer. Answer the following questions based on your observations of the SPSS output file:

1. Is the F-value for Levene's Test for Equality of Variances significant (that is, is the p< .05)? What is the exact significance level? Note: if the Levene's Test for Equality of Variances is significant, then equal variances cannot be assumed.

2. Which t-value should you use now that you know whether or not equal variances can be assumed? What is that t-value?

3. What is the two-tailed significance level for that t-value? State the exact significance value. Report the results of the t-test as follows: t(df value) = ___, and p-value.

4. Is there a statistically significant difference between the price per 6-pack of regular beers versus reduced calorie beers?

General Requirements:

Use the following information to ensure successful completion of the assignment:

• Read each segment of this assignment carefully. There is information in the segment that will guide your completion.

• Instructors will be using a grading rubric to grade the assignments. It is recommended that learners review the rubric prior to beginning the assignment in order to become familiar with the assignment criteria and expectations for successful completion of the assignment.

• Doctoral learners are required to use APA style for their writing assignments. The APA Style Guide is located in the Student Success Center.

• This assignment requires that at least two additional scholarly research sources related to this topic, and at least one in-text citation from each source be included.

In an essay of 250-500 words, thoroughly address the following items and respond to the related questions:

1. Define the term standard deviation. Why is it important to know the standard deviation for a given sample? What do researchers learn about a normal distribution from knowledge of the standard deviation? A sample of n=20 has a mean of M = 40. If the standard deviation is s=5, would a score of X= 55 be considered an extreme value? Why or why not?

2. Hypothesis testing allows researchers to use sample data, taken from a larger population, to draw inferences (i.e., conclusions) about the population from which the sample came. Hypothesis testing is one of the most commonly used inferential procedures. Define and thoroughly explain the terms null hypothesis and alternative hypothesis. How are they used in hypothesis testing?

3. Define the term standard error. Why is the standard error important in research using sample distributions? Consider the following scenario: A random sample obtained from a population has a mean of µ=100 and a standard deviation of σ = 20. The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample men and population mean for a sample of n = 100 is 2 points. Explain the difference in the standard error for the two samples.

Reference no: EM13703095

Basic descriptive statistics and graphs

Produce a side-by-side boxplot that visually depicts the relationship between Admissions and Service. The boxplots should show the distribution of the number of admissions for

Create an erd based on the crows foot model

Show the dependency diagram for each of the normal forms. Do not go beyond the 3rd normal form - Show the dependency diagram for each of the normal forms. Do not go beyon

What is the probability that it is brown

Find the probability that the selected student is the oldest or an only and find the probability that the selected student is enrolled in the College of Arts & Science.

What distribution seem most appropriate to model ttr data

What distribution would seem most appropriate to model the TTR data - If your suggested model were valid what proportion of TTR values is likely to exceed the maximum allowabl

Determine the variance of the random variable x

Marketing estimates that a new instrument for the analysis of soil samples will be very successful, moderately successful, or unsuccessful, with probabilities 0.6, 0.6, and

Find the linear correlation coefficient

Find the linear correlation coefficient for the systolic and diastolic measurements - determine the linear regression equation that uses the systolic pressure to predict the d

Systolic blood pressure in different age groups

SYSTOLIC BLOOD PRESSURE IN DIFFERENT AGE GROUPS - Is there sufficient evidence to support the claim that women in the different age categories have different mean blood press

Determine the regression equation

Suppose a large sample is selected (instead of just 10). About 95 percent of the predictions regarding sales would occur between what two values? Determine the regression equa


Write a Review

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd