Answer:
Between 21 years and 75 years
Step-by-step explanation:
Given that a real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found that the mean age was 48 years old, with a standard deviation of 9 years.
X the ages of home buyers is N(48, 9)
a) 
Hence using Cheby chev inequality

b) 

c) Using normal distribution we have

d) z value is 2.97
Hence x lies between

Between 21 years and 75 years
Answer:
Anything that can fraction down to 6/1
Step-by-step explanation:
It will take 6 days for Mika to run out of money. Mika could also have 64 and spend 1$ a day and it would be the same. Mika could have 2040$ and spend 340$ dollars a day and it still work.
Answer:
-1
Step-by-step explanation:
Answer:
the answer is going to be b
The answer is A.
Reasoning:
Choice B says to subtract 1/5. However since 1/5 has a variable next to it, it would need to be divided not subtracted