3. During the pandemic one of the biggest problems has been unemployment, each month they release figures and the most recent stated that about 22% of people are currently unemployed.
The local group “Tri-Town Council on Families” wants to find out if locally the same rate of
unemployment is true. They plan on getting a random sample of 60 people (20 from each town)
to check on unemployment.
a. Check the conditions to see if we can do a Normal Model:
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b. What would the standard deviation of our model be? Show work:

c. Create the model:

d. Would it be unusual to get a sample

the dimensions are:

step-by-step explanation:

we want to find the dimensions of a rectangular box with volume of

we factor to obtain;

we rewrite the rightmost factor to obtain;

recall that:

we apply difference of two squares formula to obtain;

hence the dimensions are

the least common denominatore of 7 and 2 is 9

step-by-step explanation:

7+2=9

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.

is only a line? i think so