5-2 ( 4a + 1 ) + 3a= 13 a. a= - 6/5 b. a=2 c. a= 2/3 d. a= -2
2 answers:
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Answer:
Step-by-step explanation:
For this case we want to find this probability:
Because they want the area to the left of the value. We need to remember that the normal standard distribution have a mean of 0 and a deviation of 1.
We can use the following excel code: =NORM.DIST(-1.55,0,1,TRUE)
And we got:
The other possibility is use the normal standard table and we got a similar result.