
QCAA Math Methods External 2020 TECH FREE MC
Authored by Raechel Crosby
Mathematics
12th Grade
Used 10+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Pulse rates of adult men are approximately normally distributed with a mean of 70 and a standard deviation of 8.
Which of the following choices correctly describes how to determine the proportion of men that have a pulse rate greater than 78?
Determine the area to the left of z = 1 under the standard normal curve.
Determine the area to the right of z = 1 under the standard normal curve.
Determine the area to the right of z = –1 under the standard normal curve.
Determine the area between z = –1 and z = 1 under the standard normal curve.
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
If the probability of success in a Bernoulli trial is 0.30, the variance is
0.70
0.46
0.30
0.21
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
The life expectancy (in years) of an electronic component can be represented by the probability density function shown. The probability that the component lasts between 1 and 10 years is
0.0010
0.100
0.900
0.990
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