In January of 2002(group 1),700 out of the 1700 spots were bare ground (no vegetation). Find the sample proportion of bare ground spots.

Given data:

The formula will be:

→

By substituting the given values, we get

Thus the response above is correct.  

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The sample proportion of bare ground spots is 0.4118

Step-by-step explanation:

The sample proportion of bareground spots is the number of bareground sports divided by the number of spots.

In this question

700 bareground spots

1700 spots

7/17 = 0.4118

The sample proportion of bare ground spots is 0.4118

chad should not have included the values (1, 2) and (3, 6) because that would mean he only had half a healing card.

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.