Question

In a study of malarial infection, 86% individuals had blood type O, 8% were type A...

In a study of malarial infection, 86% individuals had blood type O, 8% were type A and 6% were type B. Of these patients, 115 type O individuals tested positive for Malaria, as did 10 of the type A individuals and 8 of the type B individuals. The null hypothesis of the study was that blood type would have no influence on the rate of infection with malaria.

a.What is the expected number of individuals that tested positive for malaria that would be expected to show each blood type if the null hypothesis is correct?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A sample of 200 individuals are tested for their blood type is given in the first...
A sample of 200 individuals are tested for their blood type is given in the first table, and the results are used to test the hypothesized distribution of blood types. The observed results are given in the second table. At the .05 level of significance, is there sufficient evidence to show that the stated distribution is incorrect? Blood Type   A     B     O     AB   Percent...
A sample of 200 individuals are tested for their blood type is given in the first...
A sample of 200 individuals are tested for their blood type is given in the first table, and the results are used to test the hypothesized distribution of blood types. The observed results are given in the second table. At the .05 level of significance, is there sufficient evidence to show that the stated distribution is incorrect? Blood Type A B O AB Percent 0.4 0.1 0.41 0.09 Blood Type A B O AB Number 66 14 87 33 (a)...
Recently there was a study interested in a relationship between covid-19 and blood type. The following...
Recently there was a study interested in a relationship between covid-19 and blood type. The following table outlines the data gathered from a hospital in Wuhan used in the study. The patients were separated by two variable, whether or not they were infected, and their blood type. At = 0.01, test the hypothesis that the variables are independent. Infected 670 469 178 458 Not infected 1188 920 336 1250 Type of blood A B AB O A. state the Ho...
In the US, 46.9% of all people have type O blood, 39.1% have type A blood,...
In the US, 46.9% of all people have type O blood, 39.1% have type A blood, 10.3% have type B blood and 3.7% have type AB blood. A researcher wants to see if the distribution of blood type is different for millionaires. The table below shows the results of a random sample of 2996 millionaires. What can be concluded at the α = 0.01 significance level? Complete the table by filling in the expected frequencies. Round to the nearest whole...
The following blood-type frequencies were obtained from a sample of 1000 subjects. Blood Type: O A...
The following blood-type frequencies were obtained from a sample of 1000 subjects. Blood Type: O A B AB Total Frequency: 465 394 96 45 1000 An appropriate hypothesis test is conducted to test whether the data is consistent with the claim that in this population, blood types O, A, B and AB have proportions 0.45, 0.4, 0.1, and 0.05, respectively. The resultant test statistic and associated p-value are 1.25 and 0.741 respectively. The test statistic should be compared to which...
The proportion of individuals with an Rh-positive blood type is 84%. You have a random sample...
The proportion of individuals with an Rh-positive blood type is 84%. You have a random sample of n = 500 individuals. (a) What are the mean and standard deviation of p̂, the sample proportion with Rh-positive blood type? (Round your standard deviation to four decimal places.) mean standard deviation (b) Is the distribution of p̂ approximately normal? Justify your answer. Since np =   and nq =   are  ---Select--- not both both  greater than 5, the normal approximation  ---Select--- is not is  appropriate. (c) What is the...
In April 2004, a 37 year-old woman died of a mysterious skin infection that caused massive...
In April 2004, a 37 year-old woman died of a mysterious skin infection that caused massive death of the connective tissue. She had been in the hospital for routine surgery in the day surgery unit. Another patient acquired the infection but the infection was milder and he lived. In addition, twelve other patients from the same day surgery as the previous two were shown to have the infection but also survived. Analysis of the specimens taken from the individuals showed...
Case study#2 Assume that you work in criminal investigation unit and were called for an incident...
Case study#2 Assume that you work in criminal investigation unit and were called for an incident that involved someone who was shot. You arrived to the scene to see a dead person in his 50s and no other evidences rather than a small piece of clothing with blood on it. You collected the blood and went to the lab. The Investigation lead to four suspects that happened to be either close to the place of incident or had problems with...
1A) The manager of an assembly process wants to determine whether or not the number of...
1A) The manager of an assembly process wants to determine whether or not the number of defective articles manufactured depends on the day of the week the articles are produced. She collected the following information. Is there sufficient evidence to reject the hypothesis that the number of defective articles is independent of the day of the week on which they are produced? Use α = 0.05. Day of Week M Tu W Th F Nondefective 90 93 86 91 88...
A study examined parental influence on​ teenagers' decisions to smoke. A group of students who had...
A study examined parental influence on​ teenagers' decisions to smoke. A group of students who had never smoked were questioned about their​ parents' attitudes toward smoking. These students were questioned again two years later to see if they had started smoking. The researchers found​ that, among the 273 students who indicated that their parents disapproved of kids​ smoking, 71 had become established smokers. Among the 35 students who initially said their parents were lenient about​ smoking, 15 became smokers. Do...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT