Use the data given to test the following hypotheses

Ho:=25

Ha: 25

x=32.0,=9.4,n=56 and=0.05.

Determine the critical valuezcand z score valuezbased on the sample data.

The critical valuezc=

The z score valuezbased on the sample data=

Use the data given to test the following hypotheses

Ho:= 7.2

Ha:<7.2

x=5.6,=2.4,n=25and=0.01.

Determine the critical valuezcand z score valuezbased on the sample data.

The critical valuezc=

The z score valuezbased on the sample data=

Use the data given to test the following hypotheses

Ho:=1200

Ha:>1200

x= 1225,=100, n=117and=0.05.

Determine the critical valuezcand z score valuezbased on the sample data.

The critical valuezc=

The z score valuezbased on the sample data=

Use the following sample information to construct a 98% confidence interval for the difference in the two population means.

Sample 1 Sample 2

n1=43 n2=36

x1=96.1 x2=91.1

1=4.9 2=6.4

Upper confidence limit

Answer:

Lower confidence limit

Answer: