Question

Just because two or more values are different does not mean that they are different in...

Just because two or more values are different does not mean that they are different in a statistically significant manner. Researchers rely on the p values that are generated for each of their statistical tests to determine significance. If the p value is larger than the alpha, then they are not different in a statistically significant manner, and therefore the values are not considered different. In this journal activity, consider these concepts in terms of the differences between null and alternative hypotheses, and discuss this question: What is the difference between failing to reject the null hypothesis and having evidence to support the alternative hypothesis?

1-2 Paragraphs

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
question 1 1) Consider a significance test for a null hypothesis versus a two-sided alternative. State...
question 1 1) Consider a significance test for a null hypothesis versus a two-sided alternative. State all values of a standard normal test statistic z that will give a result significant at the 10% level but not at the 5% level of significance. (Sec. 6.2) You perform 1,000 significance tests using α = 0.01. Assuming that all the null hypotheses are true, how many of the test results would you expect to be statistically significant? Explain your answer. (Sec. 6.3)...
Part I Measures of effect size are useful because: A. They can be used with almost...
Part I Measures of effect size are useful because: A. They can be used with almost any statistical test B. Hypothesis testing only tells us if there is a statistically significant result C. They tell us how large a significant effect might be D. All of the above Part II Broadly speaking, what does a oneway ANOVA tell us? A. It gives us a range of values where the true population mean difference might be found B. It tells us...
The mean number of English courses taken in a two–year time period by male and female...
The mean number of English courses taken in a two–year time period by male and female college students is believed to be about the same. An experiment is conducted and data are collected from 25 males and 13 females. The males took an average of 4 English courses with a standard deviation of 0.8. The females took an average of 2.5 English courses with a standard deviation of 1.0. Set up a hypothesis test to determine whether this difference is...
Statistical significance (alpha level; p-value) reflects the odds that a particular finding could have occurred by...
Statistical significance (alpha level; p-value) reflects the odds that a particular finding could have occurred by chance. If the p-value for a difference between two groups is 0.05, it would be expected to occur by chance just 5 times out of 100 (thus, it is likely to be a “real” difference). We define a p-value of less than 0.05 to indicate statistical significance. Suppose a pizza place claims their delivery times are 30 minutes or less on average but you...
Test the Hypotheses Below Null Hypothesis: Mean Student Debt in 2011 is equal to Mean Student...
Test the Hypotheses Below Null Hypothesis: Mean Student Debt in 2011 is equal to Mean Student Debt in 2007 Alternative Hypothesis: Mean Student Debt in 2011 is not equal to Mean Student Debt in 2007 Alpha Level = 0.05 Variable 1 Variable 2 Mean 3925.76 2876.82 Variance 222129.8188 140278.3547 Observations 50 50 Pooled Variance 181204.0867 Hypothesized Mean Difference 0 df 98 t Stat 12.32073615 P(T<=t) one-tail 6.27467E-22 t Critical one-tail 1.660551217 P(T<=t) two-tail 1.25493E-21 t Critical two-tail 1.984467455 Run the...
A group of I-O psychologists were interested in whether listening to the radio or an audio...
A group of I-O psychologists were interested in whether listening to the radio or an audio book while working would result in greater productivity of factory workers (defined by pounds of product produced). Therefore, the researchers visited a factory in Pennsylvania that has 10-full-time employees. They first recorded the pounds of product produced by each employee while listening to a local music radio station on Wednesday of week 1. Then on Wednesday of week 2, the researchers recorded the pounds...
The commonly used critical Z values are 1.645 for a 90% confidence interval (or 2-tailed, .10...
The commonly used critical Z values are 1.645 for a 90% confidence interval (or 2-tailed, .10 level of significance), 1.96 for 95% confidence and 2.58 for 99% confidence. If a different confidence level is required, such as 92%, how can you determine the critical Z value? What is the relationship between the confidence level and the level of significance of a 2-tail test? Which Hypothesis Tests use Z distributions? Which Hypothesis Tests use a Student’s t distribution? Which Hypotheses Tests...
Test the Hypotheses Below Null Hypothesis: Mean Student Debt in 2011 is equal to Mean Student...
Test the Hypotheses Below Null Hypothesis: Mean Student Debt in 2011 is equal to Mean Student Debt in 2007 Alternative Hypothesis: Mean Student Debt in 2011 is not equal to Mean Student Debt in 2007 Alpha Level = 0.05 t-Test: Two-Sample Assuming Equal Variances Variable 1 Variable 2 Mean 3925.76 2876.82 Variance 222129.8188 140278.3547 Observations 50 50 Pooled Variance 181204.0867 Hypothesized Mean Difference 0 df 98 t Stat 12.32073615 P(T<=t) one-tail 6.27467E-22 t Critical one-tail 1.660551217 P(T<=t) two-tail 1.25493E-21 t...
1. Researchers surveyed a random sample of 18 students representing three different programs of study to...
1. Researchers surveyed a random sample of 18 students representing three different programs of study to determine whether students get enough sleep each night. Are the differences in hours of sleep per night across Arts, Science, and Business students statistically significant? Conduct a hypothesis test to see. Follow the five-step model with an alpha level of 0.05. Make sure to go through each step and interpret the results in terms of the research question above. Round to two places past...
PLEASE Include any Necessary Explanations/ Notes Please note that for all problems in this course, the...
PLEASE Include any Necessary Explanations/ Notes Please note that for all problems in this course, the standard cut-off (alpha) for a test of significance will be .05, and you always report the exact power unless SPSS output states p=.000 (you’d report p<.001). Also, remember that we divide the p-value in half when reporting one-tailed tests with 1 – 2 groups. Finally, remember when hand-calculating, always use TWO decimal places so that deductions in grading won’t be due to rounding differences....