The F distribution can't be negative.
no.
The Fisher F-test for Analysis of Variance (ANOVA).
the populations have an excess of heterozygotes
No. Its domain (or support) is from 0 to infinity.
Not necessarily. f(x) = -1-x2 is negative for any test value of x, it is asymptotically negative infinity, but it is NEVER zero.
The F distribution can't be negative.
It is possible to be pregnant and the test negative, but not likely.
Any test can be a false negative.
That's a DNA test, it will only be negative if you are not the parent.
No , but a negative test can be a false positive .
If the pregnancy test was negative, it means that you are not pregnant.
It is possible to have inconclusive test results, but not to test both positive and negative at the same time.
A negative chlamydia test means you are not infected with the bacteria.
Negative Negative Negative Negative
If you have had a negative blood test, it is very unlikely that you are pregnant
what mean that is rose waaler is negative in blood test result?