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Answer:
The right solution is "-8.25".
Step-by-step explanation:
The given values are:
Sampled people,
n = 150
Null and alternative hypotheses will be:


The z-statistics will be:
⇒ 
On substituting the values, we get
⇒ 
⇒ 
⇒ 
⇒ 
Answer:The area is
294
square units.
Step-by-step explanation:
A=12×(19+23)×14=(19+23)×7=42⋅7=294
Answer:
the weight of one bar is 12.75
Step-by-step explanation:
divide the total weight by the total number of bars