Answer:
Lower limit = 1007.95 cm/s
Upper limit = 1142.05 cm/s
Step-by-step explanation:
We have to calculate a 95% CI with population's standard deviation known.
The sample is size n=60, with mean M=1075.
The confidence interval can be expressed as:

For a 95% CI, the value of z=1.96.

9 inches, divide 108 by 12, because 12 inches makes a foot
Answer:
go to omnicalculator.com they have all sorts of calculators including one called a percent changer calculator
Step-by-step explanation:
Answer:
78
Step-by-step explanation:
(-5)•(-5) + 3•21= 25+ 63= 78
Decimal Form: 0.45
Fraction Form: 45/100 or 9/20