Write the numerical expression for the product of 8 and the sum of 9 and 11.3. Then evaluate it.
2 answers:
Solution: The numerical expression is and the value of this expression is 162.4.
Explanation:
The sum of 9 and 11.3 is written as .
The product of 8 means the expression should multiply by 8.
According to the given information the the product of 8 and the sum of 9 and 11.3 is written as .
To evaluate the value of the expression first we have to add 9 and 11.3 after that multiply the result by 8.
Therefore, the numerical expression is and the value of this expression is 162.4.
Answer:
162.4
Step-by-step explanation:
To write the numerical expression for the product of 8 and the sum of 9 and 11.3 we need to follow these steps:
Sum of 9 and 11.3 is given as follows:
Now the product of 8 and the sum of 9 and 11.3 is:
So the required expression is:
Solving the above expression we get:
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Answer:
Step-by-step explanation:
This question is solved using the central limit theorem, giving an answer of:
Fourth option, approximately normal with mean of 140 seconds and standard deviation of 10 seconds.
Central Limit Theorem
The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean and standard deviation
, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
Mean of 140, standard deviation of 20, sample of 4:
By the Central Limit Theorem, the distribution is approximately normal.
Mean is the same, of 140.
, thus:
Thus, the correct answer is:
Fourth option, approximately normal with mean of 140 seconds and standard deviation of 10 seconds.
For another example of the Central Limit Theorem, you can check brainly.com/question/15519207