Your friend states in a report that the average time required to circle a 1.5-mi track was 65.414 s. this was measured by timing 7 laps using a clock with a precision of 0.1 s. how much confidence do you have in the results of the report? explain.

The time per lap was calculated by measuring the time for seven laps and dividing the total time by seven.

total time

It is given that the precision is of 0.1 s. it means it is correct upto 1 place beyond decimal.

So, the actual value could vary from 457.800 s to 457.899 s i.e. the time per lap could be 65.400 s to 65.414 s

It means measured time 65.414 s has maximum error of 0.021%. Hence, the measured value is quite precise.

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation:

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.