The claimed mean score for all NBA games during a season was 105 points per game. One coach thinks his team's mean score was less. Identify the correct null and alternative hypotheses. Ha: Identify in context the type I and type II errors for the hypothesis test. Type I error: Type |I error:

What does it mean when sample results are statistically significant?

In the p-value approach, if p-value>α (the level of significance) we reject the null hypothesis. True/False

In conducting a significance test, is it easier or harder to reject the null hypothesis when it's a two-tailed test instead of a one-tailed test? A: easier B: harder

What’s P value???

Forbes reports that women in general trust recommendations from Pinterest more than recommendations from any other social network platform. But does trust in Pinterest differ by gender? The following sample data show the number of women and men who state in a recent survey that they trust recommendations made on Pinterest.     Sample Trust recommendations made on Pinterest Women 150 117 Men 170 102   We want to determine whether trust in Pinterest differ by gender. Formulate the null and the alternative hypotheses. Use 1 to represent women and 2 to represent men. H0: Ha:   Null: p1 – p2 ≥ 0; Alternative: p1 – p2 < 0 Null: p1 – p2 = 0 ; Alternative: p1 – p2 ≠ 0 Null: p1 – p2 ≤ 0; Alternative: p1 – p2 > 0   B. What the test statistics? You probably need to find the pooled proportion first.  Pooled proportion is  ___________.  0.6 0.78 0.6844   C. Test statistic is ________. 3.46 1.28 66.41 4.36

The p-value for a hypothesis test turns out to be 0.03628. At a 9% level of significance, what is the proper decision? Reject Ho O Fail to reject Ho

Which of the following terms describes when the null hypothesis is NOT rejected when it should be rejected? O Significance level, a Type I error Type II error p-Value Alternative hypothesis

An article in a journal reports that 34% of American fathers take no responsibility for child care. A researcher claims that the figure is higher for fathers in the town of Littleton. A random sample of 232 fathers from Littleton yielded 101 who did not help with child care. Do the data provide sufficient evidence to conclude that in Littleton the proportion is higher than 0.34? Use a 0.05 significance level. Null Hypothesis Ho: p = Alternative Hypothesis H1: p Test Statistic Z = p-value p = Conclusion: Write "Do" or "Do not" reject the null hypothesis.