Zack wants a new skateboard that costs $98. he has a coupon for 20% off the original price. the sales tax is 6%. what is the final cost that zack will pay for the skateboard?

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.