Answer:
hello your question lacks the required options but i will provide a general answer to your question
answer : The mean value and the standard deviation would allow us use a Z-score
Step-by-step explanation:
mean value = 231 minutes
standard deviation ( std ) = 40 minutes
sample size = 40
The parameters that would be applicable while use Z-score are : The given mean value and the standard deviation
This is because the value of a z-score gives us an information on how far we are from the mean score i.e. number of standard deviations
+Zscore means that the score is above the average value
-Zscore means that the score is below the average value
Multiply both sides by three to get 2x=30
Then divide both sides by 2 to get x=15
Answer:
Your answer is 7
Hope this helps!
Step-by-step explanation:
You plug 14 in for x then just do 14-7 and you will get 7
