nightmist
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PLZ HELP ASAP WILL GIVE BRAINLIEST!!!!!!!!!!!!!




A 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}
Identify any surveys that are likely biased. Based on the unbiased surveys, estimate the mean number of visits per member in the past year.

Respuesta :

J4mesTDG
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