Answer:
y+30
Step-by-step explanation:
the sum of the numbers is 15y
the new sum after increase each number by 30 is 15y+450
the new mean 15y+450/15
= y+30
Answer:
what the options
Step-by-step explanation:
Consists of two terms (A+B)
Answer:
A triangle
Step-by-step explanation:
Please mark me as brainliest
Answer:

Step-by-step explanation:
In a two tailed test the probability of occurrence is the total area under the critical range of values on both the sides of the curve (negative side and positive side)
Thus, the probability values for a two tailed test as compared to a one tailed test is given by the under given relation -
\
Here 
Substituting the given value in above equation, we get -
probability values for a two tailed test
=