Answer:
you left something out but you need to put it in a better understanding
Step-by-step explanation:
Answer:
Around 34.14% of the cookies are between 11.32 and 11.35 grams.
Step-by-step explanation:
In a normal distribution around 68.28% of the values are around minus one to one standard deviation. In this case we want to know the percentage of values that are between zero and one standard deviation, therefore the percentage of values that are in that range is given by 68.28% / 2 , which is equal to 34.14%.
C
By subtracting 18 to both sides you are separating the 3x because you are not ready to isolate the variable (x) in step 1