1. The five-number summary for all student scores on an exam is 40, 60, 70, 75, 79.

Suppose 100 students took the test.

How many STUDENTS had scores between 40 and 70?

2. Suppose we know that the mean heart disease death rate is 200 per 100K people and is normally distributed across 27 countries. Suppose we also know that the greatest death rate reported is 220 per 100K and the lowest death rate reported is 180 per 100K. What should be a statistically-savvy person's best guess as to the SD of this distribution?

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.

if i put something wrong your not gonna like it so rather not say nothing.

answer: answer is b.

[m < b = 120º]

step-by-step explanation: