I think about 200 people will vote for eric let me recheck
C is untrue I believe. Correct me if I'm wrong!
To solve this, we need to use the z test. The formula for
z score is:
z = (x – u) / s
where x is sample value = 141.4 mm and above, u is mean
value = 140 mm, s is standard dev = 8 mm.
z = (141.4 – 140) / 8
z = 0.175
From the standard probability tables, the p value at z =
0.175 using right tailed test is:
P = 0.4306
Answer:
27
Step-by-step explanation:
The central angle of 120° is 1/3 of the entire circle of 360°, so the sector area is 1/3 of the circle area:
1/3×81 = 27
The sector area is 27.
Answer:
a=11
Step-by-step explanation: