The property illustrated is addition.
Complete Question
A newsletter publisher believes that above 41% of their readers own a personal computer. Is there sufficient evidence at the 0.10 level to substantiate the publisher's claim?
State the null and alternative hypotheses for the above scenario.
Answer:
The null hypothesis is
The alternative hypothesis is 
Step-by-step explanation:
From the question we are told that
The proportion is 
Generally the null hypothesis is
The above condition represents the null hypothesis because it contains and equality in its condition
The alternative hypothesis is 
Answer:
9.06
Step-by-step explanation:
1. Add up all data values to get the sum:
-8 + 12 + 25.9 + -6.3 + 21.9 = 45.5
2. Count the number of values in your data set:
5
3. Divide the sum by the count:
45.4/5 = 9.06
4. You can round to 9.1
36 divided by 3 =12. 12-5 =d. So Dan is 7 years old
25% there are 8 sections and there are two you are trying to land on making it 2/8=25%