McqkartGet appPractise

A researcher obtains the following p-values for sample correlation coefficients of different samples. Which of these can be considered significant at the 1% level of significance?

1.004
2.99
3.995
4.001
5.1
A2 & 3 only
B2, 4 & 5 only
C1 & 4 only ✓ Correct
D2, 3 & 5 only
Correct answer: (C) 1 & 4 only
Explanation

At the 1% level a p-value must be below 0.01, so 0.004 and 0.001 qualify as significant.

The values 0.004 and 0.001 are both smaller than 0.01, crossing the stricter threshold.

A p-value of 0.99 is far above 0.01, showing no significance.

A p-value of 0.995 is likewise far too large to be significant.

A p-value of 0.1 exceeds even the 5% level and fails at 1%.

A smaller p-value means stronger evidence against the null hypothesis.

Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.

Practise on Mcqkart →🎓 Book an expert →