Answer:
30 cm is the perimeter.
Step-by-step explanation:
To find the perimeter of this figure, add up all the lengths of the sides:
6 cm
4 cm
9.5 cm
4 cm
6.5 cm
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30 cm is the perimeter.
Answer: Null hypothesis :
Alternative hypothesis : 
Step-by-step explanation:
Given claim : The proportion of U.S. adults age 25 or older who smoke : 
A researcher suspects that the rate is lower among U.S. adults 25 or older who have a bachelor's degree. i.e. 
Since the null hypothesis is a fact checked by the researcher or the experimenter that always contains a equals to sign.
∴ Null hypothesis :
Alternative hypothesis : 
Answer:
A
Step-by-step explanation: