Perform a Pareto analysis on the following information gathered from customer surveys at a hotel. Reason for unsatisfying stay at hotel Frequency Unfriendly staff $6$ Room not clean $2$ Room not ready at check$-$in$3$ No towels at pool $33$ No blanket for pull$-$out sofa $4$ Pool water too cold$3$ Breakfast of poor quality $16$ Elevator too slow or not working $23$ Took too long to register $7$ Bill incorrect $3$ Total $100$ examining this pareto analysis the causes of at least $60\%$ of customer dissatisfaction are