Question

1) You conduct a hypothesis test on an experimental drug K-2090 and you observe a test statistic (mean blood pressure difference) value of 0.9 calculated from a sample with size n = 100. This test statistic had a corresponding p-value of 0.064 which was greater than the significance level, and therefore failed to reject the null hypothesis. What will happen to the p-value if you observe the same test statistic for a sample of n = 10,000?

	a	May either increase or decrease
	b	Stay the same
	c	Increase
	d	Decrease
	e	Impossible to know for sure

2) Which of the following distributions would tend towards the normal distribution?

	a	Distribution of distance (measured in number of bases) between mutations on a DNA strand as the number of mutation increases.
	b	Minimum number of limbs of individual spiders in a population of Tarantula as the sample size increases.
	c	Ranking of the SeaWolf team among 50 teams in the national biology competition as the number of problems they solve increases.
	d	Mean number of male fledglings per successful nest built by songbirds as the sample size increases.

3) Which of the following quantities can meaningfully be larger than 1?

	a	Significance level
	b	Type-II error
	c	Statistical power
	d	P-value
	e	Critical value

Answer 1

Increase in the sample size will tend to result in a smaller p-value only if the null hypothesis is false

D) decrease

option 'D' correct