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Mars2501 [29]
2 years ago
6

2. A pet food company wants to know the number of pets owned by adults ages 21 to 70. The frequency table shows the data from a

simple random sample of the targeted population.
Total pets owned 1 2 3 4 5 6 7
Number of adults 248 567 1402 728 419 456 203

What is the estimated mean for the population? Explain your answer and show your work.
Mathematics
1 answer:
ludmilkaskok [199]2 years ago
7 0

Answer:

3.6669

Step-by-step explanation:

Given is a frequency distribution and we are expected to find the mean of the distribution.

Let X be the no of total pets owned and f be the number of adults owning those pets.

                                                          Total

x   1    2    3           4          5                   6                 7    

F 248 567 1402 728         419                 456                203     4023

x*f 248 1134 4206 2912 2095        2736         1421     14752

       

Mean        3.666915237

Thus we find the total of all frequencies and then sum of product of x*f.

Mean = sum of f*x/sum of x

Here mean= 3.6669

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