Unit 10 Population Proportions Test

Front

When performing a test about the population proportion, what distribution would you need to use? Options: z, t, chi-square

Back

z

Front

Identify the correct null hypothesis: Is the proportion of babies born male different from 50%? In a sample of 200 babies, 96 were male. Test the claim using a level of significance of 1%.

Back

H₀: p = 0.50

Front

Suppose the P-value for a hypothesis test is 0.0304. Using a = 0.05, what is the appropriate conclusion?

Back

Reject the null hypothesis

Front

When p-value is greater than alpha we:

Back

Fail to reject Ho

Front

What are the correct null and alternative hypotheses regarding the mayor's disapproval rating? Options: Ho: p > .20, Ha: p < .20, Ho: p < .25, Ha: p > .25, Ho: p = .25, Ha: p < .25

Back

Ho: p = .25
Ha: p < .25

Front

Which z-value is used for a 95% confidence interval?

Back

1.96

Front

Which z-value is used for a 99% confidence interval?

Back

2.58

Front

Which z-value is used for a 90% confidence interval?

Back

1.645

Front

The amount added and subtracted to the sample statistic.

Back

Margin of Error

Front

Interpret the 95% confidence interval for p: (0.082, 0.318).

Back

Based on this sample, I am 95% confident that the proportion of people who believe children under 6 shouldn't be taken to nice restaurants is between 8.2% and 31.8%.