Question

In: Statistics and Probability

USE R AND SHOW CODES!! 1.a. There is a theorem that the ratios of blood types...

USE R AND SHOW CODES!!

1.a. There is a theorem that the ratios of blood types O, A, B and AB are 49:38:9:4,

respectively. A research team, investigating a small community and obtained the following frequencies of blood type.

Blood type

Blood Type O A B AB

Frequency 87 59 20 4

Test the hypothesis that the proportions in this community do not differ significantly

from those in the general theorem.

1.b. The severity of participants' migraines is clinically assessed. The following table

displays the severity classifications for patients assigned to the medical and the non

traditional therapies

Severity Classification

Therapy Minimal Moderate Severe

Medical 90 60 50

Non traditional 50 60 90

Is there any evidence that severity is independent of type of therapy?

Expert Solution

The r-codes are shown below:

#question 1

f=c(87,59,20,4)

chisq.test(f, p=c(.49,.38,.09,.04))

#question 2

m1=c(90,60,50)
m2=c(50,60,90)

m=rbind(m1,m2) #creating the table

chisq.test(m)

orchestra answered 1 year ago

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