Statistical and practical significance

Reference no: EM13108554

A survey researcher compares 4 religious groups on their attitudes toward education. 1200 subjects receive the survey and 823 respond. There are 10 items; the likert scale is 1-5. A high positive score indicates a more positive attitude. There are only 800 useable responses. The Protestants are split into two groups for analysis purposes. The group sizes along with the means are:

Protestant1 Catholic Jewish Protestant 2
n 238 182 130 250
_
x 32.0 33.1 34 31

An analysis of variance on these groups yielded F= 5.61, which is significant at the .001 level. Discuss the practical significance issue.

Reference no: EM13108554

Questions Cloud

Find right-hemisphere damage results in significantly : Find out whether or not right-hemisphere damage results in significantly reduced performance on spatial skills task. Test with alpha set at .05 with one tail.

Statistics and death penalty : In November 2009, 65% (0.65) of Americans favored the death penalty for a person convicted of murder. In November 2010, 1025 adult Americans were asked by the Gallup organization,

Hypothesis testing-unemployment levels : Federal administration stated that unemployment level in US is 8.6% (population proportion = 0.086). A hypothesis test is to be performed to decide whether unemployment level in NY State differs from national level.

Levels of significance questions : Many times researchers preselect the value of alpha of .01 or .001. What are the factors that allow selection of either of those levels of significance?

Statistical and practical significance : A survey researcher compares 4 religious groups on their attitudes toward education. 1200 subjects receive the survey and 823 respond. There are 10 items; the likert scale is 1-5. A high positive score indicates a more positive attitude.

Calculate cohen-s d to measure size of treatment effect : Can researcher conclude that humidity has significant effect on eating behavior? Use two-tail test with α = .05. Calculate estimated Cohen's d and r2 to measure size of treatment effect.

Determine the best production order quantity : Johnson Plastics makes and sells, among many other things, specialty plastic display cases for retail stores. Johnson's expected demand for the display cases is 1,000 units, and average daily demand is 3 units.

Analysis to determine the appropriate quantities : You are the branch operations manager for a leading manufacturing company. The following are the bill of materials (BOM), Master Production Schedule, and Inventory Record Sheet for one of your products.

One-tailed test of null hypothesis : Using data on average school grade for first use. Use the t test to conduct a one-tailed test of the null hypothesis, assuming that the average grade is higher for males than for females

User Account

All Pages