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1. A political pro claims that the presidents approval rating has fallen below 25% (.25). A...

1. A political pro claims that the presidents approval rating has fallen below 25% (.25). A company that reviews data is called to test the claim. In a random sample of 500 citizens, the pollster finds that 90 individuals approve of presidents performance.

a. State the null and alternative hypotheses to test the pros claim

b. Using a level of significance of .05, determine the critical value for the test.

c. Draw a diagram for the test that shows the null hypothesis, the critical value, and the area representing the level of significance. Label clearly.

d. Calculate the test statistic for this test of hypotheses.

e. Calculate the P-Value.

f. Should the null hypothesis be accepted(Based off of the test statistic)

g. Based on the P-Value, should the null hypothesis be accepted?

h. Does your test support the political pros claim?

Math   Statistics-And-Probability   
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