Question

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 number:
Frequencies of Blood Type
Outcome   Frequency   Expected Frequency
O   1408  

A   1178  

B   306  

AB   104  
What is the correct statistical test to use?

Select an answer

What are the null and alternative hypotheses?
H
0
:

Blood type and income are dependent.
The distribution of blood type for millionaires is the same as it is for Americans in general.
The distribution of blood type for millionaires is not the same as it is for Americans in general.
Blood type and income are independent.


H
a
:

The distribution of blood type for millionaires is the same as it is for Americans in general.
Blood type and income are dependent.
The distribution of blood type for millionaires is not the same as it is for Americans in general.
Blood type and income are independent.
The degrees of freedom =
The test-statistic for this data =
(Please show your answer to two decimal places.)


Based on this, we should
fail to reject the null
reject the null
accept the null

Thus, the final conclusion is...
Select an answer

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Expected Frequencies:

What is the correct statistical test to use?

Chi square test for goodness of fit

H0 : The distribution of blood type for millionaires is the same as it is for Americans in general.

Ha : The distribution of blood type for millionaires is not the same as it is for Americans in general.

The degrees of freedom = 3
The test-statistic for this data = 0.49

fail to reject the null


There is not sufficient evidence to conclude that the distribution of blood type for millionaires is not the same as it is for Americans in general.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
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...
Suppose that in the OSU student population, 20% of blood donors have type A blood, 20%...
Suppose that in the OSU student population, 20% of blood donors have type A blood, 20% have type B, 50% have type O, and 10% have type AB. Frequencies are summarized in the following table. Blood Type Frequency A 20% B 20% O 50% AB 10% (a) In a random sample of 5 students donors, what is the probability of obtaining at most 2 blood donors that have type B blood? Why is this a binomial distribution? (b) In a...
A mother has blood type AB and a father has blood type O and they have...
A mother has blood type AB and a father has blood type O and they have a child together. 8. If blood is needed to be given to the mother and AB blood type is not available, what other blood type(s) can the mother receive (not considering Rh factor)? Explain your answer. 9. Explain why a person with AO genotype has the same phenotype (blood type A) as a person with AA genotype. Pink is the phenotype from the expression...
A recent bulletin issued by a large blood bank claims four blood types are distributed in...
A recent bulletin issued by a large blood bank claims four blood types are distributed in the U.S. population according to the following proportions: .44 are type O .42 are type A .10 are type B .04 are type AB To determine whether blood types are distributed in the same way in a population of AIDS patients, a random sample of 100 AIDS patients is obtained. If the distribution of blood types is different, something having to do with blood...
People with blood type AB have both antigen in their RBCs. A and B alleles are...
People with blood type AB have both antigen in their RBCs. A and B alleles are known to be what type of phenomenon? Greg blood type is AB and his wife Susan is blood type A. Is it possible that Susan can have a child with blood type O? Why?
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...
Recorded here is the frequency distribution of the blood types of 120 persons ? Blood Type...
Recorded here is the frequency distribution of the blood types of 120 persons ? Blood Type : O A B AB Total Frequency : 44 35 25 16 120 Test the hyphotesis that the probability of the blood types O,A,B and AB is the ratios 3:4:1:2. a) State the null hyphotesis and the alternative hyphotesis b) Find the test statistic c) If the significiancy level is 5%, find the critical value(s) and shade the rejection region(s) d) Base one the...
The American Red Cross says that about 45% of the U.S. population has Type O blood,...
The American Red Cross says that about 45% of the U.S. population has Type O blood, 40% Type A, 11% Type B, and 4% Type AB. Suppose we select 5 blood donors at random. What is the probability that the fifth donor is the first donor with Type O blood? What is the probability exactly two of the five donors will have Type O blood? What is the probability none of the five donors will have Type O blood? What...
A recent study from China concluded that people with type O blood may have a lower...
A recent study from China concluded that people with type O blood may have a lower risk of contracting the new coronavirus than people with other blood types. About 41% of the world population has type O blood. A random sample of 750 people from one country is selected, of whom 375 have type O blood. Does the data suggest that the population proportion of type O blood in a selected country is different than the worldwide proportion? Conduct a...
6) A recent study from China concluded that people with type O blood may have a...
6) A recent study from China concluded that people with type O blood may have a lower risk of contracting the new coronavirus than people with other blood types. About 41% of the world population has type O blood. A random sample of 800 people from one country is selected, of whom 333 have type O blood. Does the data suggest that the population proportion of type O blood in a selected country is different than the worldwide proportion? Conduct...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT