Hello.
Fractions can be added and subtracted only if they are like fractions.
Example:
We can subtract these fractions because they are like fractions (they have the same denominator)
Another Example:
We can add these fractions because they are like fractions.
Therefore, the answer is "like"
I hope it helps.
Have a nice day.
Answer:
Z = = 1.6
we reject the Null hypothesis
Step-by-step explanation:
The correct test statistic
Assume :
Null Hypothesis : H_0 : p = 0.08
Alternative hypothesis : H_a : p ≠ 0.08
p = proportion of residents that are unemployed
x = unemployed residents = 22
n = sample size = 200
To get the sample of the population that is unemployed we use this equation
= 22 / 200 = 0.11
now we apply the test of of significance of single proportion
= Z =
therefore Z = = 1.6
Therefore we reject the Null hypothesis
It would be equalto 2.4 * 10^6
It's a bit hard to do a model on here, but I'll try to represent it. Note that the "a"s are the shaded parts and the "b"s are the non-shaded parts.
a a a
a a a
a a a
b b b
b b b
There are 9/15 shaded.
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Hope this helps