For the following cases, you may use either the P-value approach or the rejection region approach to present a full hypothesis test, including: Identifying the claim and H0 and Ha, Finding the appropriate standardized test statistic, Finding the P-value or the rejection region, Deciding whether to reject or fail to reject the null hypothesis, and Interpreting the decision in the context of the original claim.   The Western blot assay is a blood test for the presence of HIV. It has been found that the test sometimes gives false positive results for HIV.  A medical researcher claims that the rate of false positives is 2%.  A recent study of 300 randomly selected U.S. blood donors who do not have HIV found that 5 received a false positive test result.  Perform the appropriate hypothesis test at α = 0.05.

Identify the appropriate hypothesis test (aka, which inferential statistic) for each of the following research situations (z for X, z for M, single sample t, indepen. t, repeated t, indepen ANOVA, repeated ANOVA, Pearson correlation, Spearman correlation, Regression, Chi-Square).   A researcher conducts a cross-sectional developmental study to determine whether there is a significant difference in vocabulary skills between 8-year-old and 10-year-old children. Two group of children are used (8-year-olds and 10-year-olds) and the researchers make sure the children are similar on all important individual differences     1.A researcher determines that 8% of the males enrolled in Introductory Psychology have some form of color blindness, compared to only 2% of the females. Is there a significant relationship between color blindness and gender?   2. A researcher records the daily sugar consumption and the activity level for each of 20 children enrolled in a summer camp program. The…

The Gallup Poll asked 1015 U.S. adults whether they believed that people should pay sales tax on items purchased over the internet. Of these, 477 said they supported such a tax. Does the survey provide convincing evidence that less than 42% of U.S. adults favor an internet sales tax? Use the 0.05 level of significance.    1. STATE THE NULL AND ALTERNATIVE HYPOTHESIS: 2. T STATISTIC/ P VALUE 3.REJECT OR FAIL THE NULL HYPOTHESIS 4. IS THE CLAIM SUPPORTED AT THE 0.05 LEVEL OF SIGNIFICANCE?

What does it mean when sample results are statistically significant?