157.
5*8*4=160 ( since we are trying to find missing value, subtract 160 from 3)
160-3=157
Check your answer by plugging 5*8*4-160=? Into the calculator. If you get 3, 160 is right
Answer: Option 'D' is correct.
Step-by-step explanation:
Since we have given that
Number of single women = n₁ = 15
Number of single men = n₂ = 25
Mean for men = 7 hours per week
Mean for women = 4.5 hours per week
Standard deviation for men = s₁=1.5
Standard deviation for women = s₂=1.1
We need to find the value of the pooled standard deviation for the difference in mean time spent on housework single men and women.
So, Value of pooled variance is given by
So, Value of pooled standard deviation is given by
Hence, Option 'D' is correct.
Slope= 1/2
Y intercept= (0,2)
Explanation:
Slope-intercept form is y=mx+b
-2x+4y=8
-8-2x=-4y
Divide by -4
2+1/2x=y
Y=1/2x+2