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Mnenie [13.5K]
3 years ago
9

A number, x, rounded to 1 decimal place is 3.7 Write down the error interval for x.

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
6 0

Answer: (3.65, 3.74)

Step-by-step explanation:

Now, when we round a number to a given decimal place, we need to look at the decimal to the left of the decimal place where we are rounding.

if it is 5 or more, we round up

if it is smaller than 5, we round down.

Then for example, if we want to round:

4.534

to the first decimal place, we need to look at the second decimal place.

we can see that it is a 2.

Then we round down, and get:

4.5

Now we know that, when rounding to the first decimal place, we have:

x = 3.7

Then the maximum value that x could have is:

x = 3.74 (because here we round down to 3.7)

and the minimum value that x could have is:

x = 3.65 (because here we round up to 3.7)

Then the error interval for x is:

(3.65, 3.74)

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Answer: \frac{1}{10}

Step-by-step explanation:

Since, The total number of student = 300

Out of which,

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While, the students who are not from any subject = 100

Hence, the number of student who are from both maths and science = Total student - Maths student (only) - science student (only) - None

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Thus, the probability of selecting one student who is both from maths and science = 30/300 = 1/10

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Answer:

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