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\begin{tabular}{|c|c|}
\hline
[tex]$AB$[/tex] & [tex]$\overline{0.12}$[/tex] \\
\hline
[tex]$B$[/tex] & 0.10 \\
[tex]$0$[/tex] & [tex]$\overline{0.42}$[/tex] \\
\hline
\end{tabular}

(b) According to the data, which blood type is most common?
A. [tex]$AB$[/tex]
B. [tex]$0$[/tex]
C. A
D. B

(c) According to the data, which blood type is least common?
A. B
B. [tex]$AB$[/tex]
C. A
D. [tex]$0$[/tex]

(d) Use the results of the sample to conjecture the percentage of the population that has type O blood. Is this an example of descriptive or inferential statistics?

Select the correct choice and fill in the answer box to complete your choice.
(Type a whole number.)

A. [tex]$\square$[/tex] [tex]$\%$[/tex]; inferential
B. [tex]$\square$[/tex] [tex]$\%$[/tex]; descriptive



Answer :

GinnyAnswer
Let's analyze each part of the question step-by-step:

1. Data Analysis:
From the table provided, we have the following percentages for each blood type:
- Type AB: 0.12 (or 12%)
- Type B: 0.10 (or 10%)
- Type O: 0.42 (or 42%)
- There is no percentage given for Type A directly.

2. Part (b): Identifying the Most Common Blood Type:
- From the given data, the percentages for each blood type are:
- AB: 12%
- B: 10%
- O: 42%
- A: Not provided explicitly, but we can infer it is the remaining percentage of the population.
- Among the listed values, 42% is the highest percentage.
- Therefore, the most common blood type is Type O.

3. Part (c): Identifying the Least Common Blood Type:
- From the provided data:
- AB: 12%
- B: 10%
- O: 42%
- A: As inferred, it is the remaining percentage which is 0% in this context.
- Among the given types, the least percentage is 0% for Type A.
- Therefore, the least common blood type is Type A.

4. Part (d): Conjecture on the Percentage of the Population with Type O Blood:
- From the data, Type O blood type comprises 42% of the sample population.
- Using this sample to project or conjecture the population percentage is an example of inferential statistics because we are making an inference from the sample data to the broader population.
- Hence, the correct percentage is 42%, and it is an example of inferential statistics.

Therefore, the correct answer for part (d) is:
- A. 42%; inferential

Summary:
- Part (b): The most common blood type is Type O.
- Part (c): The least common blood type is Type A.
- Part (d): 42%; inferential.

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