Round 4,615 to the nearest thousand

Mathematics

2 answers:

satela [25.4K]2 years ago

6 0

Answer: 5,000

Step-by-step explanation: Take the number 4,615 no the rule for rounding any digit is 5 and above give it a shove aka round up 4 and below let it rest or round down go to the digit before the number you are rounding the 6 now six is above 5 so you will round this up now to round it up it will be ten so leave the 0 and carry the 1 over to the 4 add it and you will get your answer and lastly all digits to the right of the place you are rounding make them 0s.

mixas84 [53]2 years ago

3 0

5,000 because 4,615 is closer too 5,000

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A recent survey showed that in a sample of 100 elementary school teachers, 15 were single. In a sample of 180 high school teache

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Answer:

By using hypothesis test at α = 0.01, we cannot conclude that the proportion of high school teachers who were single greater than the proportion of elementary teachers who were single

Step-by-step explanation:

let p1 be the proportion of elementary teachers who were single

let p2 be the proportion of high school teachers who were single

Then, the null and alternative hypotheses are:

$H_{0}$ : p2=p1

$H_{a}$ : p2>p1

We need to calculate the test statistic of the sample proportion for elementary teachers who were single.

It can be calculated as follows:

$\frac{p(s)-p}{\sqrt{\frac{p*(1-p)}{N} } }$ where

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p is the proportion of elementary teachers who were single ( $\frac{15}{100} =0.15$ )