1. name the igneous rock in which crystals of biotite mica are larger than 10 mm in diameter.

2. Identify the luster, hardness, and dominant form of breakage for members of the mica family.

3. Large crystals of mica, sometimes weighing several hundred tons, have been found in igneous
rock in Canada. Identify the environment of formation and the relative rate of cooling of the magma
that formed the igneous rock containing these large crystals.

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

answer: h

step-by-step explanation:

its d hope this