The operations manager at a brewery that runs 24 hours per day wants to investigate the amount of production time lost each day (24-hour period) due to equipment failure. Historically, the population mean amount of lost time has been assumed to be 3.4 hours per day. The manager feels that due to aging equipment, the population mean is now greater than 3.4 hours per day. The manager decides to test his claim. Over the next 2 months, the sample of 30 days results in an average amount of lost time 3.92 hours per day with a sample standard deviation 1.4 hours. What would be the conclusions that we can draw for the test described above based on these sample results?

a

explanation:

answer: the first graph

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.

0,0

step-by-step explanation: