Mr. rodriguez asked 60 randomly chosen students from each grade level at willowbrook school about their favorite types of reading materials. of those 60 students, 12 chose science fiction. mr. rodriguez used the data to draw the inference that about 20% of middle school students prefer to read science fiction. if 150 students attend the school, did he make a reasonable inference?

2, 2, 2 or -4, 20, 29

step-by-step explanation:

there is two ways you can do it.

large crystals result from very slow cooling.

evaporation of water: this would produce an evaporite which is a sedimentary rock. like a salt pan in a desert. not possible to have volcanic rocks originate this way.

crystalization in molten earth: slow cooling over time. (hundreds to millions of years)

crystalization at earth's surface: this results in fast cooling. (a few hours to a few months or years)

crystalization from cooling off hot water: that would be a hydrothermal deposit. while associated with volcanics they are not volcanic rocks themselves and usually occur fairly rapidly.