If a sample of 69 students is taken from a population of 508 students, the

population variance, o> , is the variance of how many students' heights?

Step-by-step explanation:

It must be 508 students heights, because the problem is asking for a population variance, not a sample variance, which is calculated with a different formula.

Remember that population is the total number of subjects that are being studied, and sample is a subgroup of that total number.

the answer for this question is : 360°

step-by-step explanation:

we have been given a triangle   we need to tell which one of these is a triangle below to map onto itself.

360° rotation is the complete rotation which eventually leads to the same figure which is given.

the correct will be, that is 360° that will cause the triangle below to map onto itself.