Answer:
Modification has not reduced the number of accidents.
Step-by-step explanation:
A B C D E F G H
Before modification 5 7 6 4 8 9 8 10
After modification 3 7 7 0 4 6 8 2
Difference -2 0 1 -4 -4 -3 0 -8
Mean of differences
Standard deviation of differences =
Formula of paired t test :
Df = n-1 = 8-1 =7
t critical> t calculated
So, We failed to reject null hypothesis
Hence modification has not reduced the number of accidents.
I believe it is 6 because u just divide 24 by 4
Answer:
(b) 21 (c) 36 (d) 42 (e) 45 (f) 18. (g) 28 (h) 49 (i) 40 (j) 8 (k) 9 (l) 4. (m) 7 (n) 7 (o) 9 (p) 0 (q) 0 (r) 0. 2. (a) 3 (b) 7 (c) 4 (d) 8 (e) 3 (f) 4 (g) .
Answer:
Step-by-step explanation:
So I'm looking at negative 64 and then four square to 16 and 16 times eight is 128 again May I'll show the steps you're subtracting off, you know, zero plus zero eso What we have is to native
Answer:
w=10.75 l=32.25
Step-by-step explanation:
So if we know that the length is 3 times as long as the width than if the width is x, length would be 3x.
3x+3x+x+x=86 There are two lengths and two widths
8x=86 Combine like terms
x=10.75 divide both sides by 8 and our width is 10.75
Length is 32.25 multiply 10.75 by 3