a) During the Covid-19 pandemic in 2020, people were using a variety of products to regularly sanitize their hands.We are interested in knowing if hand sanitizer works better, on average, than hand wipes.Fifty-three people were randomly selected to use hand wipes, after which the amount of bacteria still remaining was recorded.

(Bacteria on skin is measured in colony forming units per square centimeter, CFU/cm2.)

The mean number of bacteria still present for those who used hand wipes was 435CFU/cm2with a standard deviation of 85CFU/cm2. Thirty-six people were randomly chosen to use hand sanitizer, after which the amount of bacteria still remaining was recorded.

The mean number of bacteria still present for those who used hand sanitizer was 390CFU/cm2with a standard deviation of 128CFU/cm2.

Determine if there is enough evidence to support the idea that, on average, hand sanitizer works better than hand wipes.Use the P-value method.