Situation: Find the substance's half-life, in days.
Round your answer to the nearest tenth.
A 22 gram sample of a substance that's
used to sterilize surgical instruments has
a k-value of 0.1354.
Enter the correct answer.
N= Noekt
DONE
No = initial mass (at time t = 0)
OOO
OO
N = mass at time t
k = a positive constant that depends on
the substance itself and on the units
used to measure time
t = time, in days

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.