Question

1. Suppose that a random sample of size 36 is to be selected from a population...

1.

Suppose that a random sample of size 36 is to be selected from a population with mean 49 and standard deviation 9. What is the approximate probability that  will be within 0.5 of the population mean?

a.

0.5222
b.

0.0443
c.

0.2611
d.

0.4611
e.

0.7389

2.

Suppose that x is normally distributed with a mean of 60 and a standard deviation of 9. What is P(x  68.73)?

a.

0.834
b.

0.166
c.

0.157
d.

0.334
e.

0.170
Math   Statistics-And-Probability   
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