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Jet001 [13]
2 years ago
9

Ratios Question 2

Mathematics
1 answer:
PolarNik [594]2 years ago
8 0
It’s number 2 the values it 24
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Round it to the nearest hundredth if necessary 75kg=? Lb
umka2103 [35]
75kg is equal to 165.347 lbs. 
You can find these kinds of questions easily answered with the help of google :)

5 0
3 years ago
A recent survey showed that in a sample of 100 elementary school teachers, 15 were single. In a sample of 180 high school teache
trapecia [35]

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

  • p(s) is the sample proportion of high school teachers who were single (\frac{36}{180} =0.2)
  • p is the proportion of elementary teachers who were single (\frac{15}{100} =0.15)
  • N is the sample size (180)

Using the numbers, we get

\frac{0.2-0.15}{\sqrt{\frac{0.15*0.85}{180} } } ≈ 1.88

Using z-table, corresponding  P-Value is ≈0.03

Since 0.03>0.01 we fail to reject the null hypothesis. (The result is not significant at α = 0.01)

8 0
3 years ago
Find the mean absolute deviation (MAD) of the data in the pictograph below
mezya [45]

Answer:

16

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
A box of 15 cookies costs $9.<br> What is the cost for 1 cookie? <br> $_____
mel-nik [20]

Answer:

15 box of cookies =$9

1 box of cookie = $9/15=$0.6

6 0
2 years ago
Read 2 more answers
Use compatible numbers to find two estimates 73÷4,858
zvonat [6]
Compatible numbers to find two estimates 73÷4,858

70÷4,850 = 0.014
You sure it's not 4,858÷73
4,850÷70 =

______ _____ 69 2/7
70)4850. 7)485
42
65
63
8 0
3 years ago
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