The mean weight of 500 college students is 70 kg and the standard deviation is 3 kg. Assuming that the weight is normally distri
1 answer:
Answer: 4.75%.
Step-by-step explanation:
Given: The mean weight of 500 college students is 70 kg and the standard deviation
is 3 kg.
Let X be the number of students weight over 75 kg.
If the weight is normally distributed, then the probability that students weigh over 75 kg:
Hence, the percentage of students weigh over 75 kg = 4.75%.
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<h2>Answer:</h2>
The correct options are:
- The domain is all real numbers.
- The base must be less than 1 and greater than 0.
- The function has a constant multiplicative rate of change.
We know that the exponential function is given by:
where a>0 and b are constants.
Also, it represents a growth function if b>1
and a decay function if 0<b<1
where b is the base.
- x belongs to whole of the real numbers( since the exponential function is well defined for all the real values of x.
Hence, the domain of the function is all the real numbers )
- Also, the graph of a decay function decreases continuously i.e. with the increasing input value the output value decreases.
- The exponential decay function always have a constant multiplicative rate of change i.e. b.