Answer:
17
Step-by-step explanation:
since you are subtracting a negative number it reverses, so you actually ADD the two together
so, 12 1/2 + 4 1/2
add the whole numbers first;
12+4=16
then fractions:
1/2 + 1/2= 1
then all together;
16+1=17!
I think a non- integer rational number but I’m not real sure on that.
Answer:
<em>a </em>- 13
Step-by-step explanation:
a- 13 because you are taking 13 away from a
Answer:
<u>20/48 = 42%</u>
Step-by-step explanation:
<u>Number of beige tiles</u>
- 48 - 8 - 6 - 9 - 5
- 40 - 6 - 9 - 5
- 34 - 9 - 5
- 25 - 5
- 20 beige tiles
<u>Probability (Beige)</u>
- No. of beige tiles / Total no. of tiles
- <u>20/48 = 42%</u>
Answer:
<em>H</em>₀: <em>μ₁ = μ₂= μ₃</em>
<em>Hₐ: </em>At least one of the means is different.
Step-by-step explanation:
Analysis of variance or ANOVA test is used to determine whether the means of different groups are similar or not.
The hypothesis of an ANOVA test for <em>n</em> homogeneous groups is:

In this case the researcher is testing whether the mean bone mineral density is different for the three different groups.
The hypothesis for this test can be defined as follows:
<em>H</em>₀: The mean bone mineral density is not different for the three different groups, i.e. <em>μ₁ = μ₂= μ₃</em>
<em>Hₐ: </em>The mean bone mineral density is different for the three different groups, i.e. at least one of the means is different.