Problem Set
Problem 10.7 (p. 400)
In an agronomy experiment, peanuts with shriveled seeds were crossed with normal peanuts.
The
genetic model that the agronomists were considering predicted that the ratio of normal to shriveled
progeny would be 3 : 1.
They obtained 95 normal and 54 shriveled progeny.
Do these data sup.ort the
hypothesized model?
(a)
Conduct a chisquare test with
= 0.05.
Use a nondirectional alternative.
(b)
State your conclusion from part (a) in the context of this setting.
Problem 10.20 (p. 410)
Phenytoin is a standard anticonvulsant drug which unfortunately has many toxic side effects.
A study
was undertaken to compare phenytoin with valproate, a new drug, in the treatment of epilepsy.
Patients were randomly allocated to receive either phenytoin or valproate for 12 months.
Of 20
patients receiving valproate, 6 were free of seizures for the 12 months, while 6 of 17 patients receiving
phenytoin were seizurefree.
(a)
Use a chisquare test to compare the seizurefree response rates for the two drugs.
Let H
A
be non
directional and
= 0.10.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview.
Sign up
to
access the rest of the document.
 Spring '08
 Staff
 Linear Regression, Regression Analysis, Variance, Errors and residuals in statistics, Phenytoin

Click to edit the document details