Answer:
Step-by-step explanation:
We have been given that in a population of exam scores, a score of x=48 corresponds to z=+1.00 and a score of x=36 corresponds to z=-0.05.
To find the values of mean and standard deviation, we will use z-score formula as:
Let us solve for x (sample score).
Upon substituting our given values, we will get two equations as:
Upon substituting equation (1) in equation (2), we will get:
Therefore, the mean of the given data would be approximately 36.57.
Upon substituting in equation (1), we will get:
Therefore, the standard deviation for the given data would be approximately 11.43.
Answer:
5x5=25
Thanks
Sorry, I don't know what you mean by LONGEST CHAIN
"The sum of the number 'n' and 31" . . . . . (n + 31)
"17 times the sum" . . . . . 17(n + 31)
The equation . . . . . 17(n + 31) = 357
Answer:
S = 20 + 0.5*x (S is the total bill, x is the number of text messages)
Step-by-step explanation:
The cell phone company have a fixed value you have to pay every month, independently of the number of text messages you send, and that is $20.
For each text message, you pay an additional %0.50.
So, if you send 'x' text messages in a month, you will pay the fixed $20 plus $0.5 for each text messages: you will pay 0.5 times x for the messages.
So, we can formulate the following equation:
Being "S" the total price you will pay:
S = 20 + 0.5*x
Answer:
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Step-by-step explanation:
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