1. How many different ways is it possible to get seven heads in a sample of twenty coin flips?

2.What is the probability of getting seven heads in a sample of twenty coin flips? Is this significantly different from the population in which P = 0.50 if the alpha is 0.05?

3. In which case would it be easier to reject the null hypothesis: a two-tailed test with an alpha of 0.10 or a one-tailed test with an alpha of 0.05?

4. What is the Chi-square value for an alpha of 0.01 with 10 degrees of freedom? If an obtained Chi-square value for 10 degrees of freedom at an alpha of 0.05 is 19.7, what is the researcher's decision in the hypothesis test?

5. The frequency distribution given below provides the distribution of mother's education from a sample taken from the National Youth Survey. Calculate the univariate Chi-square statistic, and determine if the sample is statistically different from a population in which the frequencies are hypothesized to be equal for all cells. State the null and alternate hypotheses, find the Chi-square critical value (for alpha of 0.01), and present the statistical decision.

Educational Level Frequency

Post grad degree 35
Completed college 120
Some college 336
High school/GED 506
Some high school 340
Grade school 78
Some grade school 59
Total 1474

Solution Summary

The solution gives the details of chi-square test, null hypothesis, alternative hypothesis, critical value and P value are given. Some basic probability calculation are also given.

... by step method for the calculation of testing of hypothesis... The null hypothesis tested is. ... Intermediate Calculations F Test Statistic 15.0156 Population 1 Sample ...

... by step method for the calculation of testing of hypothesis... Calculations Area For one-tailed tests: TDIST value 0.0000 1 ... F Test for Differences in Two Variances. ...

... and detailed explanation of various aspects of Chi Square Hypothesis Tests as they ... We shall use Level of Significance, α = 0.05 to test the hypothesis. ...

Hypothesis Testing: Test Statistics T Test. ... (Chart on attachment) A. State the hypotheses being tested. ... The test statistic used is Where O - Observed frequency. ...

... µ)/σx where µ=mean that is being tested σx=standard ... a 2 tailed test because we are testing µ1 <> µ2 ... associated with F statistic= F = test statistic = MST ...

... solution provides step by step method for the calculation of testing of hypothesis... We can test the equality of variance as follows ... The null hypothesis tested is. ...

Confidence interval and Hypothesis testing problems. ... Blanking Out on Tests Monay students have had the unpleasant experience of panicking on a test because the ...

... by step method for the calculation of Hypothesis testing. ... Lower-Tail Test Lower Critical Value -1.71088 Calculations ... 0.016767 For one-tailed tests: Reject the ...

... regarding differences between means and variances have been tested. ... of Perform the chi-square test for a ... and use the critical value for your hypothesis testing. ...

... step method for the calculation of testing of hypothesis... The null hypothesis tested is H0: There is no ... Upper-Tail Test Upper Critical Value 2.583487185 p -Value ...