Answer:
The z-score is -1.6 and it is not significant .
Step-by-step explanation:
Given : Test score = 48.4
Mean = 66
Standard deviation = 11
To Find :Find the z-score corresponding to the given value and use the z-score to determine whether the value is significant.
Solution:
Formula : 
Substitute the values
So, the z-score is -1.6
Now we are given that Consider a score to be significant if its z-score is less than -2.00 or greater than 2.00.
Since -1.6>-2 and -1.6<2
So, It is not significant
Hence the z-score is -1.6 and it is not significant .
The value of log(0.47) after rounding to 4 decimal place is -0.3279
Option D
Given :
Find the value of log(0.47) using calculator
To find the log value we use the calculator
here we are asked to find out log (0.47) that is the log (decimal)
we cannot find the log value without calculator because we have decimal argument inside log.
Use scientific calculator
Press log first then enter the number 0.47 inside a parenthesis
Press enter , it will show you the log(0.47)
log(0.47) =-0.327902142
Now round the answer to 4 decimal places
We have 0 in the 5th decimal place . so we keep 9 as it is
log(0.47) =-0.3279
Learn more : brainly.com/question/10101390
Answer:
The slope should be m= 4/7
Step-by-step explanation:
i hope this helps a little <3 have a awesome day
