Gavin is looking at stars with his farther and notices some of the stars are brighter than others. Gavin's father tells him that the brightness of a star is one way that scientists determine the star's magnitude. What other property, which Gavin and his father might observe, is used by scientists to classify stars?
A. The constellation the star is in
B. The gas that makes up the star
C. The star's rotation
D. The star's color

Tcan be concluded that % of the seniors would prefer to see more candid pictures in this year's edition of the yearbook.

The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables