A researcher developed a regression model to predict the tear rating of a bag of coffee based on the plate gap in bag-sealing equipment. Data were collected on 30 bags in which the plate gap was varied. An analysis of variance from the regression showed that b1=0.7778 and
A researcher developed a regression model to predict the tear rating of a bag of coffee based on the plate gap in bag-sealing equipment. Data were collected on 30 bags in which the plate gap was varied. An analysis of variance from the regression showed that b1=0.7778 and
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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critical values
A researcher developed a regression model to predict the tear rating of a bag of coffee based on the plate gap in bag-sealing equipment. Data were collected on
30
bags in which the plate gap was varied. An analysis of variance from the regression showed that
b1=0.7778
and
Sb1=0.2411.
a. At the 0.05 level of significance, is there evidence of a linear relationship between the plate gap of the bag-sealing machine and the tear rating of a bag of coffee?
b. Construct a 95% confidence interval estimate of the population slope,
β1.
a. Determine the hypotheses for the test. Choose the correct answer below.
H0:
β1≤0
H1:
β1>0
H0:
β1≥0
H1:
β1<0
H0:
β0≤0
H1:
β0>0
H0:
β0=0
H1:
β0≠0
H0:
β1=0
H1:
β1≠0
H0:
β0≥0
H1:
β0<0
Compute the test statistic.
The test statistic is
3.233.23.
(Round to two decimal places as needed.)Determine the critical value(s).
The critical value(s) is(are)
enter your response here.
(Use a comma to separate answers as needed. Round to two decimal places as needed.)
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