Answer:
if what? come on
Step-by-step explanation:
2/3 ÷ 3/11
flip the second one and multiply:
2/3 × 11/3
22/9
2 4/9
Hope this helps :)
Answer: -1.33 .
Step-by-step explanation:
Formula to find the Z-score :
![Z=\dfrac{\text{Expected value - Mean}}{\text{Standard deviation}}](https://tex.z-dn.net/?f=Z%3D%5Cdfrac%7B%5Ctext%7BExpected%20value%20-%20Mean%7D%7D%7B%5Ctext%7BStandard%20deviation%7D%7D)
Given: Mean = 191 and Standard deviation = 21
Then , the z-score corresponding to the expected value of 163 will be :
![Z=\dfrac{163-191}{21}\\\\=\dfrac{-28}{21}\approx-1.33](https://tex.z-dn.net/?f=Z%3D%5Cdfrac%7B163-191%7D%7B21%7D%5C%5C%5C%5C%3D%5Cdfrac%7B-28%7D%7B21%7D%5Capprox-1.33)
Hence, the z score corresponding to selling 163 inhalers is -1.33 .