Mathematics, 20.02.2020 07:00 xelynncaldera
A poll shows that 50% of students play sports. A random sample of 20 students showed that 70% of them play sports.
A number generator was used to simulate 20 samples from a population in which 50% of students play sports. The results are shown in the dot plot.
What is the chance of getting a sample proportion of 70% or greater?
A.0.2
B.0.3
C.0.4
D.0.6
Answers: 3
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If a is a nonzero real number then the reciprocal of a is
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1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given
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Aplane is flying at 32,500 feet. it needs to rise to 36,000 feet in two stages.• in stage 1, it rises 5% of its initial altitude of 32,500 feet.• in stage 2, it rises at a rate of 125 feet per minute.how many minutes does it take for the plane to rise during stage 2?
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A poll shows that 50% of students play sports. A random sample of 20 students showed that 70% of the...
Biology, 24.02.2020 21:18