Confidence in banks: A poll conducted asked a random sample of 1239 adults in the United States how much confidence they had in banks and other financial institutions. A total of 158 adults said that they had a great deal of confidence. An economist claims that greater than 11% of U.S. adults have a great deal of confidence in banks. Can you conclude that the economist's claim is true? Use both =α0.10 and =α0.01 levels of significance and the P-value method with the TI-84 Plus calculator.Part: 0 / 50 of 5 Parts CompletePart 1 of 5(a) State the appropriate null and alternate hypotheses.:H0 :H1 This hypothesis test is a ▼(Choose one) test.

In a recent survey, 808 American adults were asked if they would give the U.S. president a favorable job performance rating. Of those surveyed 53% gave the president a favorable rating.Calculate a confidence interval for the true percent of all American adults who would give a favorable rating for the president.Group of answer choices(49.48%, 56.52%)(48.38%, 57.62%)(52.9%, 53.12%)(46.78%, 59.22%)(46.08%, 59.92%)

A researcher would like to estimate p, the proportion of U.S. adults who support raising the federal minimum wage.Due to a limited budget, the researcher obtained opinions from a random sample of only 1,432 U.S. adults. With this sample size, the researcher can be 95% confident that the obtained sample proportion will differ from the true proportion (p) by no more than which of the following percentages (answers are rounded)? 0.07% 2.6% 3.0% 5.2%

A random sample of 160 households is selected to estimate the mean amount spent on electric service. A 95% confidence interval was determined from the sample results to be ($151, $216). Which of the following is the correct interpretation of this interval? We are 95% confident that the mean amount spent on electric service among all households is between $151 and $216. We are 95% confident that the mean amount spent on electric service among the 160 households is between $151 and $216. 95% of the households will have an electric bill between $151 and $216. There is a 95% chance that the mean amount spent on electric service is between $151 and $216.

Suppose a population contains 80,000 people. All else being equal, a study based on a population sample that includes which of the following numbers of respondents would you have the most confidence in?A.800B.8000C.80D.8

Multiple Linear RegressionIf the p-value for the overall significance hypothesis test of the multiple linear regression is 0.007, which of the following statements is correct at a 99 percent confidence level?The annual income has a significant influence on the credit card bill.The annual income and annual credit card charges have a significant influence on the credit card bill.The annual income, annual credit card charges, and household size have a significant influence on the credit card bill.At least one of the annual income, annual credit card charges, and household size has a significant influence on the credit card bill.Can’t comment at a 99 percent confidence level.