Test the claim that o = 14.49 vs o < 14.49 if n = 12, s = 13.3, and a = 0.05. %3D Assume that the population is normally distributed. Test Statistic Round to thousandths place. %3D P-Value = Round to thousandths place. Decision = Write "Reject" or "Fail to Reject"

Stress at work: In a poll about work,  51%  of respondents said that their jobs were sometimes or always stressful. Eleven workers are chosen at random.What is the mean number who find their jobs stressful in a sample of  11  workers? Round the answer to two decimal places.

In a random sample of seven people, the mean driving distance to work was 22.5 miles and the standard deviation was 5.9 miles. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 95% confidence interval for the population mean u. Interpret the results. Identify the margin of error. (Round to one decimal place as needed.) Construct a 95% confidence interval for the population mean. (Round to one decimal place as needed.) Interpret the results. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) O A. With % confidence, it can be said that most driving distances to work (in miles) in the population are between the interval's endpoints. O B. It can be said that % of the population has a driving distance to work (in miles) that is between the interval's endpoints. OC. With % confidence, it can be said that the population mean driving distance to work…

Both before and after a recent earthquake, surveys were conducted asking voters which of the three candidates they planned on voting for in the upcoming city council election. Has there been a change since the earthquake? Use a level of significance of 0.05. Table shows the results of the survey. Has there been a change in the distribution of voter preferences since the earthquake?   Peter Alan Sui Before 2077 1751 571 After 1689 1433 464 What is the chi-square test-statistic for this data?χ2=Report all answers accurate to three decimal places.

Claim: Fewer than 91% of adults have a cell phone. In a reputable poll of 1045 adults, 82% said that they have a cell phone. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.)

Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 410 randomly selected adults showed that 57% of them would erase all of their personal information online if they could. Find the value of the test statistic.

云2 * 00 The table summarizes results from 983 pedestrian deaths that were caused by automobile accidents. Pedestrian Intoxicated? Driver Intoxicated? Yes NO. 74 Yes 283 577 NO. If one of the pedestrian deaths is randomly selected, find the probability that the driver was not intoxicated. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. prob = | Submit Question MacBook Air 0吕 F3 DD F4 F5 F2 & 23 $ 4. 7. 2. M R. H

Refe of gir The The Table of numbers of girls and probabilities Number of Girls x 0 1 2 5678 A WN- 3 4 Print P(x) 0.006 0.035 0.116 0.216 0.263 0.223 0.103 0.035 0.003 Done hts. The ranc

Both before and after a recent earthquake, surveys were conducted asking voters which of the three candidates they planned on voting for in the upcoming city council election. Has there been a change since the earthquake? Use a level of significance of 0.05. Table shows the results of the survey. Has there been a change in the distribution of voter preferences since the earthquake? Peter Alan Sui Before 2077 1751 571 After 1689 1433 464 What is the chi-square test-statistic for this data? x² = Report all answers accurate to three decimal places. Submit Question