Karen took three samples from a population of students to measure their average study time. A 3-column table with 3 rows. Column 1 is labeled Sample with entries Sample 1, Sample 2, Sample 3. Column 2 is labeled Predicted Mean with entries 34, 15, 29. Column 3 is labeled Actual mean with entries 28, 28, 28. Compute the variation of each predicted population mean from the sample means in the table.

5x+10 is the correct one

hope this

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.