Answer:
462 cm²
Step-by-step explanation:
<u><em>Area of larger rectangle:</em></u>
=> 42*21
=> 882 cm²
<u><em>Area of smaller rectangle:</em></u>
=> 28*15
=> 420 cm²
<u><em>Area of shaded region:</em></u>
=> 882-420
=> 462 cm²
Answer:
Step-by-step explanation:
Solve the following inequality:
Use <u>Distributive Property</u>:
-Take and subtract it from :
Subtract both sides by :
Divide both side by
Answer: 2.5
Step-by-step explanation:
Let be the population mean .
Then, Null hypothesis :
Alternative hypothesis :
We assume that this is a normal distribution.
Given : Sample size : n=25 , since the sample is small (n<30) so we cannot apply z-test . Thus the test is t-test.
Sample mean :
Population standard deviation :
The test statistic for population mean is given by :-
i.e.
Hence, the observed critical value = 2.5
Using it's concept, the desired probability is given as follows:
P(decaf or sugar) = 0.41.
<h3>What is a probability?</h3>
A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>. A probability can also be represented as a proportion.
From the table, we have that:
- P(decaf) = 0.05 + 0.08 + 0.09 = 0.22.
Hence:
P(decaf or sugar) = 0.22 + 0.19 = 0.41.
More can be learned about probabilities at brainly.com/question/14398287
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