Web Analytics
nightmist
Answered

HELP ASAP WILL GIVE BRAINLIEST!!!!!!!!!!!!! AND 50 POINTS




The table shows the results of four surveys that randomly sampled 50 families in a town about the number of pets their family has.


0 Pets 1 Pet 2 or More Pets Total

Survey 1 12 13 25 50

Survey 2 20 21 9 50

Survey 3 10 13 27 50

Survey 4 11 12 27 50

Identify surveys that are likely biased. Based on the unbiased surveys, what percent of the families in the town are expected to have 2 or more pets?


40 %


44 %


53 %


59 %

Verified Answer :

FauxGeoDuck

Your answer is c, hope this helps, ask me any questions if needed+

Answer:

C. 53%

Step-by-step explanation:

From the table, we see that,

The number of families in Survey 1, 3 and 4 are increasing as the number of pets increases.

But, that is not happening in Survey 2. This might be due to some bias.

Thus, Survey 2 is most likely to be biased.

So, we get the unbiased survey are 1, 3 and 4.

So, the number of families in these surveys having 2 or more pets are,

Survey 1 = 25,        Survey 3 =  27,          Survey 4 = 27

So, the total number of families having 2 or more pets = 25 + 27 + 27 = 79

Also, the total number of families for the 3 surveys = 50 + 50 + 50 = 150

Thus, the percent of families having 2 or more pets = \(\frac{79}{150}\times 100\) = 52.7% ≈ 53%

Hence, option C is correct.

Related Questions