Answer: -1.33 .
Step-by-step explanation:
Formula to find the Z-score :

Given: Mean = 191 and Standard deviation = 21
Then , the z-score corresponding to the expected value of 163 will be :

Hence, the z score corresponding to selling 163 inhalers is -1.33 .
It would take him 58.2 seconds to fill 14 glasses and it would take him 87.3 seconds to fill 21 glasses
Answer:
1.1 ithink
Step-by-step explanation:
A = < 90°
the measure of the angle is less than 90
Answer:
b) c + 0.35c − 10
Step-by-step explanation: