Question

Find the mean of a set of data with a standard deviation of 4, given that a value of 73 has a z-score of 1.5.

Question 2 options:

61


79


67.5


67

Answer 1

Answer:

I also don't know help me also

Answer 2

Answer:

67

Step-by-step explanation:

Hi in this problem we are asked to find a mean given the standard deviation, the X value and disease score corresponding to the X value. So since it's a normal distribution, we know that any value X is equal to the um I think those Z. Z equal to the X value minus degree over the standard creation. So we multiply the stock price, That standard deviation get this, we add the mean to decide. So here now mu Z the standard deviation is equal to X. So we subtract the Z. 10 standard deviation from east side. Okay, you're gonna get me if you go to X minus disease score and the standard deviation, So the X is equal to 73, Z is equal to 1.5 And standard deviation is four. So this game could do 67. So that's our population, 67.

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