Problem 3
A computer program has produced the following output for a hypothesis-testing problem:
Difference in sample means: 2.35
Degrees of freedom: 18
Standard error of the difference in the sample means: ........ ?
Test statistic: t_(0)=2.01
P-Value =0.0298
Required:
a) What is the missing value for the standard error?
b) Is this a two-sided or one-sided test? One-sided test for a t 0=2.01 is a P-value of 0.0298 .
c) If a=0.05, what are your conclusions? Reject the null hypothesis and conclude that there is a difference in the two samples.
d) Find a 90% two-sided CI on the difference in the means.
Problem 3
A computer program has produced the following output for a hypothesis-testing problem:
Difference in sample means: 2.35
Degrees of freedom: 18 Standard error of the difference in the sample means:.
Test statistic: to = 2.01
P-Value = 0.0298
Required:
a) What is the missing value for the standard error?
b) Is this a two-sided or one-sided test? One-sided test for a t0=2.01 is a P-value of 0.0298
c) If a=0.05, what are your conclusions? Reject the null hypothesis and conclude that there is a difference in the two samples. d) Find a 90% two-sided CI on the difference in the means.