Question

The Social Media and Personal Responsibility Survey found that 69% of parents are “friends” with their children on Facebook. A random sample of 140 parents was selected.
a. Calculate the standard error of the proportion.
b. What is the probability that 100 or more parents from this sample are “ friends” with their children on Facebook?
c. What is the probability that between 96 and 105 parents from this sample are “ friends” with their children on Facebook?
d. If 81 parents responded that they are “ friends” with their children on Facebook, does this result support the findings of the Social Media and Personal Responsibility Survey?


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  • CreatedJuly 17, 2015
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