In point estimation a. data from the sample is used to estimate the population parameter. b. the mean of the population equals the mean of the sample.

a. data from the sample is used to estimate the population parameter.

Step-by-step explanation:

Given

Point estimation

Required

The true statement

Point estimation literally means taking data from the sample to estimate the corresponding population parameter

For instance:

Sample mean estimates population mean

Sample standard deviation estimates population standard deviation

Sample variance estimates population variance

Hence;

(a) is correct

the answer is c

step-by-step explanation:

the sum of the lengths of any two sides of a triangle is greater than the length of the third side. if you take the three sides of a triangle and add them in pairs, the sum is greater than (not equal to) the third side. if that is not true, then it is not possible to construct a triangle with the given side lengths.

step-by-step explanation: