A thermometer reading 72 degrees Fahrenheit is placed in a refrigerator where the temperature is a constant 38 degrees Fahrenheit. a) If the thermometer reads 60 degrees Fahrenheit after 2 minutes, what will it read after 7 minutes

b)How long will it take before the thermometer reads 39 degrees Fahrenheit

c) Determine the time that must elapse before the thermometer reads 45 degrees Fahrenheit
Use this formula, kt=ln(T-S)/(To-S)
To=Initial Temp
T=Final Temp
S=Environmental Temperature
t=Time passed
k=constant ​

(co 3) the times that customers spend in a book store are normally distributed with a mean of 39.5 minutes and a standard deviation of 9.4 minutes. a random sample of 25 customers has a mean of 36.1 minutes or less. would this outcome be considered unusual, so that the store should reconsider its displays? no, the probability of this outcome at 0.035, would be considered usual, so there is no problem yes, the probability of this outcome at 0.035, would be considered unusual, so the display should be redone no the probability of this outcome at 0.359 would be considered usual, so there is no problem yes, the probability of this outcome at 0.965 would be considered unusual, so the display should be redone