RESEARCH METHODS THINKING CRITICALLY WITH PSYCHOLOGICAL SCIENCE
THE SCIENTIFIC METHOD AND DESCRIPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When the number of people involved increases, the chance for conflict resolution decreases.
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When the number of people involved decreases, the chance for conflict resolution increases.
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There is no correlation between the number of people involved and the chance for conflict resolution.
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There is a correlation between the number of people involved and the chance for conflict resolution.
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Detailed explanation-1: -In a two-tailed test, extreme values above or below are evidence against the null hypothesis. Reject the null hypothesis if test statistics fall on either side of the critical region. Example: The average score for the mean population is 80, with a standard deviation of 10.
Detailed explanation-2: -A two-tailed hypothesis test is designed to show whether the sample mean is significantly greater than and significantly less than the mean of a population. The two-tailed test gets its name from testing the area under both tails (sides) of a normal distribution.
Detailed explanation-3: -A two-tailed test will test both if the mean is significantly greater than x and if the mean significantly less than x. The mean is considered significantly different from x if the test statistic is in the top 2.5% or bottom 2.5% of its probability distribution, resulting in a p-value less than 0.05.
Detailed explanation-4: -If you are testing to see if there is significant linear correlation (a two tailed test), then there is another way to perform the hypothesis testing. There is a table of critical values for the Pearson’s Product Moment Coefficient (PPMC) given in the text book.