Answer:
Event is not unusual(p>0.05).
Step-by-step explanation:
Given that :

#The sample proportion is calculated as:

#Mathematically, the z-value is the value decreased by the mean then divided the standard deviation :

#We use the normal probability table to determine the corresponding probability;

Hence, the probaility is more than 0.05, thus the event not unusual and thus this is not necessarily evidence that the proportion of Americans who are afraid to fly has increased.
Answer:
Step-by-step explanation:
To solve the equation I=prt for p, divide by its coefficient, rt. That gives ...
p = I/(rt)
__
Now, to answer the question, you can substitute the given values for I, r, t and you have ...
p = $300/(0.06·10) = $500
Hamid initially invested $500.
Answer:
-3
Step-by-step explanation:
3 + (-3) = 0