Annie is concerned over a report that "a woman over age 40 has a better chance of being killed by a terrorist than of getting married." A study found that the likelihood of marriage for a never-previously-wed, 40-year-old university-educated American woman was 3.4%. To demonstrate that this percentage is too small, Annie uses her resources at the Baltimore Sun to conduct a simple random sample of 438 never-previously-wed, university-educated, American women who were single at the beginning of their 40s and who are now 45. Of these women, 20 report now being married. Does this evidence support Annie’s claim, at the 0.02 level of significance, that the chances of getting married for this group is greater than 3.4%? Step 1 of 3:  State the null and alternative hypotheses for the test. Fill in the blank below. Step 2 of 3:  Compute the value of the test statistic. Round your answer to two decimal places. Step 3 of 3:  Draw a conclusion and interpret the decision.

The following is a random sample of men and women residents of Iowa. Do these data suggest a difference between the sexes in average spending on Christmas gifts in 2020? Follow the four steps for a hypothesis test.   Male Male Female Female 250 450 300 375 400 300 350 400 425 350 500 450 350 325 425 300 500 425 400 350 400 200 350 370 375   450 400

1) A sociology professor I know has been studying gender roles in eating behaviors-in particular.she is convinced that the stereotypes about salads being "feminine" and steaks being "masculine" are no longer relevant. She sent me the following data from a popular Des Moines eatery which compares meal choices and gender, hoping that I could employ statistical methods to help her. Steak Salad Other Male 25 18 41 14 22 33 Female Use the above table and appropriate methods to test her claim that Choice of these Meals is Independent of Gender at the a = 0.05 level of significance.

1. If you wanted to conduct a survey to determine the mean shoe size of American adults, how could you collect the data to ensure that you had a simple random sample?

A nonprofit company concerned with the school dropout rates has designed a tutoring program aimed at students between 16 to 18 years old. A national center for educational statistics reported that the high school dropout rate for the year 2000 was 10.9​%.One school​ district, who adopted the use of the​ nonprofit's tutoring program and whose dropout rate has always been very close to the national​ average, reported in 2004 that 158 of their 1769 students dropped out. Is their experience evidence that the tutoring program has been​ effective?   Determine the hypotheses for this test. Choose the correct answer below A. H0​: p=0.109 HA​: p≠0.109   B. H0​: p≠0.109 HA​: p=0.109   C. H0​: p=0.109 HA​: p<0.109   D. H0​: p=0.109 HA​: p≥0.109   E. H0​: p≥0.109 HA​: p=0.109   F. H0​: p≤0.109 HA​: p=0.109   Compute the test statistic. enter your response here ​*______*   Find the​ P-value. enter your response here* ______* 3. Is their experience evidence that the tutoring…

IS IT REASONABLE TO ASSUME THIS SAMPLE CAME FROM A NORMAL POPULATION?

A warehouse manager wants to know if there is an association between the shift worked and being on time for work. To investigate, he selects a random sample of 70 workers and classifies each one according to the shift they worked most recently and whether they were on time for work. He was unable to classify a substantial number of people as being on time, so he classified those individuals as unknown. The data are displayed in the table.   The manager would like to know if these data provide convincing evidence of an association between the shift worked and being on time in the large population of all workers at this warehouse. The random and 10% conditions are met. Is the Large Counts condition met? Yes, the smallest expected count is 5, so all expected counts are at least 5. Yes, the smallest expected count is 8.54, so all expected counts are at least 5. No, the smallest expected count is 2.56, so the expected counts are not all at least 5. No, the smallest expected count is…

Annie is concerned over a report that "a woman over age 40 has a better chance of being killed by a terrorist than of getting married." A study found that the likelihood of marriage for a never-previously-wed, 40-year-old university-educated American woman was 3.1 %. To demonstrate that this percentage is too small, Annie uses her resources at the Baltimore Sun to conduct a simple random sample of 424 never-previously-wed, university-educated, American women who were single at the beginning of their 40s and who are now 45. Of these women, 19 report now being married. Does this evidence support Annie's claim, at the 0.01 level of significance, that the chances of getting married for this group is greater than 3.1 % ? Step 2 of 3: Compute the value of the test statistic. Round your answer to two decimal places.

1. To determine whether using a cell phone while driving increases the risk of an accident, a researcher examines accident reports to obtain data about the number of accidents in which a driver was talking on a cell phone. A. Is this a randomized experiment or an observational study? B. Assume that the accident reports show that people were more likely to have an accident while talking on a cell phone. Could this result be due to confounding?

USA Today ran a report about a UNC poll of 1248 adults from the southern U.S. It was reported that 8% of those surveyed believe that Elvis Presley still lives. The article began with the claim that "almost 1 out of 10" Southerners still thinks Elvis is alive. At the 0.01 significance level, test the claim that the true percentage is 10%.