How do turn a decimal to a fraction

2 answers:

4 0

Step 1: Write down the decimal divided by 1, like this: decimal 1 Step 2: Multiply both top and bottom by 10 for every number after the decimal point. (For example, if there are two numbers after the decimal point, then use 100, if there are three then use 1000, etc.)Step 3: Simplify (or reduce) the fraction

Ivanshal [37]2 years ago

3 0

If the decimal is in the tenths then the denominator would be like 10. Ex: Decimal: 0.2 Fraction- 2/10. and the same with hundredths, thousandths, etc.

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Answer:

13.57 < µ < 15.43

Step-by-step explanation:

Assume: We have to assume the sample comes from a normally distributed population because we do not know the population standard deviation.

We assume that it was a random sample.

Do not assume: The sample size is at least 30 because we are that it's 10. Don't assume the variance is less than the mean because we can calculate it and will know for sure.

To find a 90% confidence interval we need to find the sample mean and sample standard deviation. See attached photo 1 for the calculations

See attached photo 2 for the construction of the confidence interval