Question

In: Statistics and Probability

Decide on a null hypothesis and a testable research hypothesis. Then you will be shown some...

Decide on a null hypothesis and a testable research hypothesis. Then you will be shown some data including some descriptive statistics and an associated probability value. Based on those data, make a decision whether or not to reject the null hypothesis. Make sure you state why you made your decision.

Is there a significant positive relationship between motivation and GPA?

State the NULL HYPOTHESIS

State the ALTERNATIVE HYPOTHESIS

Data were collected and results showed…

The Pearson product-moment correlation coefficient found was r = +.65

p = .07

Make your decision

Solutions

Expert Solution

As we are testing here whether there is a significant positive relationship between motivation and GPA, therefore this is a one tailed test for which the null and the alternative hypothesis are given as:

Now as the p-value for the test here is 0.07, we can say that the test is significant at all the level of significance above 0.07 but not for <= 0.07

For example:

For level of significance, = 0.1, as the p-value here is 0.07 < 0.1, therefore the test is significant and we can reject the null hypothesis and conclude that the there is a significant positive relationship between the two variables here.

But For example for level of significance, = 0.05, as the p-value is 0.07 > 0.05, therefore the test is not significant here and we dont have sufficient evidence that there is a significant positive relationship between the variables.


Related Solutions

Decide on a null hypothesis and a testable research hypothesis. Then you will be shown some...
Decide on a null hypothesis and a testable research hypothesis. Then you will be shown some data including some descriptive statistics and an associated probability value. Based on those data, make a decision whether or not to reject the null hypothesis. Make sure you state why you made your decision. Will students score differently on an achievement test when they learn from a friendly teacher or a stern teacher? State the NULL HYPOTHESIS State the ALTERNATIVE HYPOTHESIS Data were collected...
Provide what you believe to be the research question and testable hypothesis for this study. Then,...
Provide what you believe to be the research question and testable hypothesis for this study. Then, identify the independent and dependent variables in the study. (200 words minimum) Example Study: Two hundred adults seeing an asthma nurse specialist were randomly assigned to either a new type of bronchodilator medication (treatment group) or placebo (control group). After 3 months the peak flow rates in the treatment group had increased by a mean of 96 l/min (SD 58), and in the placebo...
Some of the statements below refer to the null hypothesis, some to the alternate hypothesis. State...
Some of the statements below refer to the null hypothesis, some to the alternate hypothesis. State the null hypothesis, H0, and the alternative hypothesis, Ha, in terms of the appropriate parameter (μ or p). A. The mean number of years Americans work before retiring is 34. (out of the following) H0: p = 34,     Ha: p ≠ 34 H0: μ = 34,     Ha: μ ≠ 34      H0: p ≥ 34,     Ha: p < 34 H0: p ≤ 34,     Ha: p > 34 H0: μ...
Discuss briefly what is a testable hypothesis?
Discuss briefly what is a testable hypothesis.
Why do we test the null hypothesis and not our research hypothesis?
Why do we test the null hypothesis and not our research hypothesis?
a. Which hypothesis, the null or the alternative, is the status-quo hypothesis? Which is the research...
a. Which hypothesis, the null or the alternative, is the status-quo hypothesis? Which is the research hypothesis?
Need to see how Research Hypothesis and Null Hypothesis is appropriate for research question Also Variables...
Need to see how Research Hypothesis and Null Hypothesis is appropriate for research question Also Variables are to be Operationally defined for it as well.See the following article due by 10pm. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4323084/pdf/nihms642582.pdf Thanks
What is meant by a “null” hypothesis? How do you test a null hypothesis?
What is meant by a “null” hypothesis? How do you test a null hypothesis?
How do you decide whether to reject or fail to reject the null hypothesis? How do...
How do you decide whether to reject or fail to reject the null hypothesis? How do you tell whether the test is left, right, or two tailed? Why can we never accept the null hypothesis? Why does decreasing the probability of making a type one error increase the probability of making a type two error? How does a researcher decide the level of significance for a hypothesis test?
1-Give an example of a null hypothesis and alternate (research) hypothesis that might be a good...
1-Give an example of a null hypothesis and alternate (research) hypothesis that might be a good use of a t-test for independent samples.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT