Multiple choice

1. When determining the sample size n, if the value found is not an integer initially, we ______ round this value up to the next integer value. 

always

sometimes

never

2. When the sample size and the sample proportion remain the same, a 90% confidence interval for a population proportion p will be ______ the 99% confidence interval for p. 

wider than

narrower than

equal to

3. Whenever the sampled population has a normal distribution, the sampling distribution of is a normal distribution for (Points : 1) 

only large sample sizes.

only small sample sizes.

any sample size.

only samples of size 30 or more.

4. When solving for the sample size needed to compute a confidence interval for a population proportion, the _________p(1-p) is, the _____ n will be. (Points : 1) 

larger, smaller.

smaller, larger.

larger, larger.