Question

In: Statistics and Probability

A medical journal reported the following frequencies of deaths due to cardiac arrest for each day...

  1. A medical journal reported the following frequencies of deaths due to cardiac arrest for each day of the week.

   Day

Cardiac Deaths (observed)

Cardiac Deaths (expected)

Monday

40

Tuesday

17

Wednesday

16

Thursday

29

Friday

15

Saturday

20

Sunday

17

Total

We want to determine whether the number of deaths is uniform over the week.

  1. Determine the degrees of freedom

  1. Determine the expected frequencies (complete table above)

  1. Compute the test statistic.

d.   Using the critical value approach, perform the test for uniformity.

Solutions

Expert Solution


orchestra answered 2 years ago
Next > < Previous

Related Solutions

A study reported in the Journal of the American Medical Association investigated the cardiac demands of...
A study reported in the Journal of the American Medical Association investigated the cardiac demands of heavy snow shoveling. Ten healthy men underwent exercise testing with a treadmill and a cycle ergometer modified for arm cranking. The men then cleared two tracts of heavy, wet snow (ouch!) using a lightweight plastic snow shovel and an electric snow thrower. Each subject’s heart rate was recorded under the 4 exercise modes. The Excel spreadsheet provides the heart rates for ten subjects under...
A study reported in the Journal of the American Medical Association investigated the cardiac demands of...
A study reported in the Journal of the American Medical Association investigated the cardiac demands of heavy snow shoveling. Ten healthy men underwent exercise testing with a treadmill and a cycle ergometer modified for arm cranking. The men then cleared two tracts of heavy, wet snow by using a lightweight plastic snow shovel and an electric snow thrower. Each subject's heart rate during snow removal were compared with the values obtained during treadmill and arm-crank ergometer testing. Dataset: HeartRate Treadmill...
You are asked to evaluate three medical interventions that reduce the number of deaths due to...
You are asked to evaluate three medical interventions that reduce the number of deaths due to congestive heart failure. Among these interventions, there are no influences on the patient's quality of life. Which evaluation method would you use and why?
the percentage of deaths due to disease is 12.5%. A medical student wants to test whether...
the percentage of deaths due to disease is 12.5%. A medical student wants to test whether the percentage of deaths due to disease is less than 12.5%. She collected data on deaths due to disease over 8 states. She found out that there were 102 patients diagnosed with disease and 11 patients died. Carry out a test of significance by answering the questions below in as much detail as possible. Use a 10% level of significance. What is the value...
. In the past year, a total of 300 deaths due to pregnancy conditions were reported...
. In the past year, a total of 300 deaths due to pregnancy conditions were reported as well as 3,500,000 live births. Calculate the maternal mortality rate for the year. 2. The state population in the past year was 20 million. Live births in the same year totaled 400,000. Infant deaths in that year were 5,000. Calculate the infant mortality rate for the year. 3. The state population for the year was 20 million. Live births in the same year...
A study reported in the Journal of the American Medical Association involved the study of respiratory...
A study reported in the Journal of the American Medical Association involved the study of respiratory tract infections in children aged 1 to 5 years in Israel. During the period November 1999 to March 2000 a randomly selected group of the children received a placebo and another randomly selected group received a mixture of Echinacea and Vitamin C. The following table gives the numbers for the children in each group and for those who developed pneumonia during that time. Treatment:...
Question 2: The Journal of the American Medical Association reported in 2002 on a study of...
Question 2: The Journal of the American Medical Association reported in 2002 on a study of 1,100 airline passengers who flew from San Francisco to Denver. 515 of these passengers traveled on planes where air was re-circulated, the remaining 585 traveled on planes that did not recirculate air. Of those that did travel on planes where the air was recirculated, 110 reported post-flight respiratory problems. Of those on planes that did not recirculate the air, 108 reported post-flight respiratory problems....
1 point) A recent study in the Journal of the American Medical Association reported the results...
1 point) A recent study in the Journal of the American Medical Association reported the results of an experiment where 40 overweight individuals followed the Weight Watchers diet for one year. Their weight changes at the end of the year had a mean of ?¯=3.1x¯=3.1 kg with a standard deviation of ?=4.7s=4.7 kg. We want to use this data to test the claim that the diet has an effect, that is, that the weight change is higher than 0. 1....
1 point) A recent study in the Journal of the American Medical Association reported the results...
1 point) A recent study in the Journal of the American Medical Association reported the results of an experiment where 40 overweight individuals followed the Weight Watchers diet for one year. Their weight changes at the end of the year had a mean of x¯=3.1x¯=3.1 kg with a standard deviation of s=5.1s=5.1 kg. We want to use this data to test the claim that the diet has an effect, that is, that the weight change is higher than 0. 1....
A medical journal reported the results of a study in which three groups of 50 women...
A medical journal reported the results of a study in which three groups of 50 women were randomly selected and monitored for urinary tract infections over 6 months. One group drank cranberry juice​ daily, one group drank a lactobacillus​ drink, and the third group drank neither of those​ beverages, serving as a control group. In the control​ group, 18 women developed at least one infection compared with 19 of those who consumed the lactobacillus drink and only 7 of those...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT