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chapter 08, section 8.2, problem 025
a city planner wants to estimate, with a 97% confidence level, the average monthly residential water usage in the city. based on earlier data, the population standard deviation of
the monthly residential water usage in this city is 387.40 gallons. how large a sample should be selected so that the estimate for the average monthly residential water usage in
this city is within 105 gallons of the population mean?
round your answers to the nearest integer.

europa2433

europa2433

step-by-step explanation:

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

the photograph is photographer and- in the process- ourselves.

step-by-step explanation:

at least two

step-by-step explanation: