In a Random sample of 80 adults, the average number of messages received in a day was 50 with a standard deviation of 20. What is the 95% confidence interval for the average number of messages received by all adults daily?

Which term best describes the association between variables a and b

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.