17. A researcher selects a sample of 49 participants from a population with a mean of...

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Question

math Statistics-And-Probability

Answer 1

Answer #1

n - X |

Z= $\tiny \frac{13.5-12}{\frac{3.5}{\sqrt{49}}}$

$\tiny Z=\frac{1.5}{0.5}$

Z=3

so probability of selecting sample mean of 13.5 or larger from this population is

P(>=13.6)=P(Z>=3)=0.0015

Answer 2

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