Answer:
Its C. 30=4x-12
Step-by-step explanation:
Answer:
Option C
Step-by-step explanation:
Given that three hundred men in Ohio were selected at random and characterized as to whether they wore glasses and whether the amount of reading they did was above average, average, or below average. The results are presented in the following table.
H0: There is no association between the amount of reading and wearing glasses
Ha: There is association between the amount of reading and wearing glasses
(Two tailed chi square test)
25 12.5 12.5
Above avg. Avg. Below avg Total
Yes 47 48 31 126
No 26 78 70 174
73 126 101 300
Contingency table
Above avg. Avg. Below avg Total
Yes 30.66 52.92 42.42 126
No 42.34 73.08 58.58 174
73 126 101 300
Chisquare 8.708271363 0.457414966 3.074408298 12.24009463
6.305989608 0.331231527 2.226295664 8.863516799
21.10361143
df = 2
Test statistic = 21
Option c
Answer:
x = - 
Step-by-step explanation:
Given
13 = - 4x - 9 ( add 9 to both sides )
22 = - 4 ( divide both sides by - 4 )
= x, thus
x = -
40-6=34 so he got 34/40 correct. 34/40= 85% so thats like a B...
