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