Which are examples of a population and its potential sample? all men: heart attack survivors family: teenager smokers: people who have lung cancer school district: high school soccer team: basketball team orchestra: woodwind players library: personal book collection

1. Population; All men Sample; (i) Heart Attack Survivors Family:

2. Population; School District Sample; (i) High School Team Soccer: (ii) Basketball Team Orchestra

3. Population; Woodwind Players Library Sample; Personal Book Collection

4. Population; People who have Lung Cancer Sample; Teenage Smokers

Sample;  

Explanation:

Population is a general set while sample is a subset.

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west