Jill begins the summer with $500 in her savings account. Each week she withdraws $20. Her brother, Sam, starts the summer with $150 in
his account. He adds $30 to his account each week. At what weck will
both Jill and Sam have the same amount in their account?
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Now, martin can reasonably guess that the standard deviation for the entire population of people at the mall during the time of the survey is $1.50. what is the 95% confidence interval about the sample mean? interpret what this means in the context of the situation where 95 people were surveyed and the sample mean is $8. use the information in this resource to construct the confidence interval.