Which fractions have a LCD of 45? A. 2/3, 1/6, 1/5 B. 2/3, 1/9, 1/15 C. 2/15, 1/5, 1/3 D. 2/27, 1/7, 1/3

Hope this helps you

For this case we know that : The length of human pregnancy is known to have mean length of 268 days. So then this value need to represent a paramter since is related to all the population and in known

And for this case the value obtained from the sample calculated as:

represent a statisitc (called the sample mean) in order to estimate the population mean.

So then the best option for this case is:

(c) 268 is a parameter and 266 is a statistic

Step-by-step explanation:

By definition a parameter is "any numerical quantity that characterizes a given population or some aspect of it"

By definition a statistic or sample statistic is "any quantity computed from values in a sample" in order to estimate the parameter of interest.

For this case we know that : The length of human pregnancy is known to have mean length of 268 days. So then this value need to represent a paramter since is related to all the population and in known

And for this case the value obtained from the sample calculated as:

represent a statisitc (called the sample mean) in order to estimate the population mean.

So then the best option for this case is:

(c) 268 is a parameter and 266 is a statistic