The table shows the result of a restaurant survey. Meals Service good Service poor Total
Lunch 21
31 52
Dinner 45
25 70
Total 66
56 122
Find the probability the service was poor given that the meal was dinner
The probability the service was poor, given that the meal was dinner is
(Type an integer or a simplified fraction.)

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?