Question

A random sample of 831 births included 431 boys. Use a 0.01 significance level to test the claim that 51.1% of newborn babies are boys. Do the results support the belief that 51.5% of newborn babies are boys?

The test statistic for this hypothesis test is

(Round to two decimal places as needed.)

Identify the P-value for this hypothesis test.

The P-value for this hypothesis test is

(Round to three decimal places as needed.)

Answer #1

use

Test statistic

P value= 2 p(Z>0.44)

=2*[1-p(z<0.44)]

=2*(1-0.6700)

P value=0.6599

**P value=0.660**

Where, P value > 0.01

We accept Ho

Conclusion:

There is sufficient evidence to support the claim that 51.1% of newbourn babies are boys

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