99 points fast museum surveyed three groups of 5 members to find out how many times the members visited the zoo in the past year. the table shows the results of the three samples.
survey visits to the museum
group 1 {4, 10, 6, 3, 8}
group 2 {3, 1, 2, 1, 2}
group 3 {7, 9, 3, 4, 7}

the sporting goods store has 1225 customers one weekend

identify any surveys that are likely biased. based on the unbiased surveys, estimate the mean number of visits per member in the past year.

enter your answer in the box. round to the nearest whole number


Well Group 1 is 30
Group 2 is 10
Group 3 is 30.
So Group 2 is most biased
I would go with group 2 as the unbiased one, as its not normal to visit a Zoo/Museum (You wrote both) 10 times a year.

After you got what you need, you can do this:

Since you should round it, and its above 1.5, the proper answer is 2.
I think the group 2 survey is likely to be biased towards people who are not too keen on zoos since all the values are small.
From group 1 and 3 the mean number of visits are
     (4 + 10 + 6 + 3 + 8 + 7 + 9 + 3 + 4 + 7) / 10 

=   61/10

mean = 6
Group 2 is biased.

mean number of visits = (4+10+6+3+8+7+9+3+4+7)/10 = 61/10 = 6.1
Group 1: 31 Group 2: 9 Group 3: 28
Biased survey gives completely different results than the unbiased ones. So the biased survey is the group 2

Since group 1 and 3 are unbiased, based on those,
mean number of visits per member = (4+10+6+3+8+7+9+3+4+7)/10 = 6.1

group 2 which is 60

Step-by-step explanation:

*Hello there!*~

The answer is:


rounded the answer will be 6.

*Hopes this helps you!*~



I believe the answer is 6 visits.

I hope it helps!

Do you know the answer?

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