It takes an average of 14. 1 minutes for blood to begin clotting after an injury....
It takes an average of 9.5 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will change if the patient is immediately told the truth about the injury. The EMT randomly selected 54 injured patients to immediately tell the truth about the injury and noticed that they averaged 10.6 minutes for their blood to begin clotting after their injury. Their standard deviation was 2.45 minutes. What can be concluded at the the...
It takes an average of 8.7 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will increase if the patient is immediately told the truth about the injury. The EMT randomly selected 61 injured patients to immediately tell the truth about the injury and noticed that they averaged 8.8 minutes for their blood to begin clotting after their injury. Their standard deviation was 2.97 minutes. What can be concluded at the the...
The average amount of time it takes for couples to further communicate with each other after their first date has ended is 3.19 days. Is this average longer for blind dates? A researcher interviewed 59 couples who had recently been on blind dates and found that they averaged 3.4 days to communicate with each other after the date was over. Their standard deviation was 0.849 days. What can be concluded at the the a-0.01 level of significance? a. For this...
The average wait time to get seated at a popular restaurant in the city on a Friday night is 12 minutes. Is the mean wait time different for men who wear a tie? Wait times for 14 randomly selected men who were wearing a tie are shown below. Assume that the distribution of the population is normal. 12, 11, 10, 13, 9, 13, 10, 11, 10, 10, 12, 13, 11, 9 What can be concluded at the the a =...
The average test score for the statistics course is 81%. A professor wants to see if the average test score for students who are given colored pens on the first day of class is different. The test scores for the 12 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 82, 59, 64, 78, 66, 73, 79, 61, 65, 54, 85, 58 What can be concluded at the...
The average house has 14 paintings on its walls. Is the mean different for houses owned by teachers? The data show the results of a survey of 13 teachers who were asked how many paintings they have in their houses. Assume that the distribution of the population is normal. 15, 13, 14, 15, 13, 11, 13, 12, 15, 14, 11, 13, 12 What can be concluded at the αα = 0.10 level of significance? a. For this study, we should...
your help is appreciated :) The average wait time to see a doctor at the Walnut ER on a Monday afternoon is 12 minutes. Is the mean wait time less for women with small children? Wait times for 12 randomly selected women with small children are shown below. Assume that the distribution of the population is normal. 11, 11, 9, 12, 13, 11, 10, 10, 11, 12, 12, 11 What can be concluded at the the a -0.01 level of...
Nationally, patients who go to the emergency room wait an average of 7 hours to be admitted into the hospital. Do patients at rural hospitals have a lower waiting time? The 13 randomly selected patients who went to the emergency room at rural hospitals waited an average of 6.5 hours to be admitted into the hospital. The standard deviation for these 13 patients was 1.4 hours. What can be concluded at the the Q = 0.10 level of significance level...
The average final exam score for the statistics course is 76%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is different. The final exam scores for the 13 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 74, 88, 68,95, 84, 83, 70, 97, 66, 82, 67, 67, 86 What can be...
Due Sat 11/23/2019 10:05 pm Currently patrons at the library speak at an average of 63 decibels. Will this average change after the installation of a new computer plug in station? After the plug in station was built, the librarian randomly recorded 64 people speaking at the library. Their average decibel level was 65.4 and their standard deviation was 14. What can be concluded at the the a = 0.05 level of significance? a. For this study, we should use...