Temperature alarms for
monitoring
a) The fridge/freezer is located in a service room which is maintained at a
temperature ranging between 20°C and 25°C.
Assuming the fridge is operating normally, calculate:
i) the maximum difference in temperature between the fridge and the
room.
ii)
the maximum difference in temperature between the freezer and
the room.

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.