NO.PZ2015120604000148
问题如下:
Here is a table discribing sample statistics from two bonds' rate of return which are both normally distributed over the past decades. If an investor is considering whether the variance of bond A is equal to the variance of bond B,
which of the following conclusion is least appropriate (significant level=5%) ?
选项:
A.It is appropriate to use the test.
B.It is appropriate to use the F-test.
C.The null hypothesis is:H0 : σ1 2 =σ2 2解释:
A is correct.
The F-test is appropriate to the equality of two independent normally distributed population variances.test is appropriate to test whether a variance from a normally distributed population is equal to a certain value.
根据题干内容C是对的么