When constructing a confidence interval for a population mean, if a population is normally distributed and a small sample is taken, then the distribution of is based on the distribution.

Step-by-step explanation:

Given that "When constructing a confidence interval for a population mean, if a population is normally distributed and a small sample is taken, then the distribution of is based on the "t"distribution."

Because the given sample size is smaller so we have to use the "t" distribution for constructing the confidence interval for a given population

2 over 5

step-by-step explanation:

the 2: 3 ratio is the length of the ac segment to the cb segment total length. this implies that the ratio between segment ac length and segment ab length is 2: 5. point c is 2/5 from a to b, so the required fraction is 2/5.

your answer is -9

step-by-step explanation: