PLEASE HELP2. Mr. Wilcox has done over 50 track days at Gingerman Raceway in South Haven Michigan. He keeps track of each lap time (in seconds) and has found that they follow an approximately

normal distribution. A random sample of 9 laps shows a mean laptime of x = 102. 4 seconds

with a standard deviation of s, = 3. 2 seconds. Create a 90% confidence interval for Mr.

Wilcox's career average lap time.

it's filtration, but this is an assumption so my apologies if i got this

the answer to this question is 3.

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).