What are the domain and range of C(x) = -18
2 answers:
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Answer:
7z+5>47
Remove the 5:
Divide by 7 to get z by itself:
Answer:
Step-by-step explanation:
Given that the time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes.
P(completing exam before 1 hour)
= P(less than an hour) = P(X<60)
=P(Z<)
=0.5-0.34=0.16
i.e. 16% of students completed the standardized exam.