What’s 5.9876 rounded to the nearest tenth? (In the picture it’s question #1)
2 answers:
Answer:
The answer is 6.
Step-by-step explanation:
In order to determine the answer, we have to know about notation numbers. In any number, every digit has a notation, depending on its position.
I have attached an image that shows some notation numbers.
We can see that the nearest tenth position corresponds to the first decimal digit, to the right of the decimal point.
To round the number, first we have to see where is the position where we want to cut the number. Then we have to see the number to the right of the cut position. The rule says:
- If the number is equal or greater than 5, so the number to the left of the cut position will be increase one digit.
- If the number is lesser than 5, so the number to the left of the cut position will not change.
In this case, the number to the right of the cut position is 8, so we have to increase the number to the left of the cut position, 9, in one digit.
Finally, the number 5.9876 rounded to the nearest tenth is 6.
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Answer:
Since the sample size is larger than 30, the cognitive psychologist can assume that the sampling distribution of M will be approximately normal.
Step-by-step explanation:
We use the central limit theorem to solve this question.
The Central Limit Theorem estabilishes that, for a random variable X, with mean and standard deviation
, a sample size larger than 30 can be approximated to a normal distribution with mean
and standard deviation
So
Since the sample size is larger than 30, the cognitive psychologist can assume that the sampling distribution of M will be approximately normal.