Answer:
The 95% of confidence intervals
(2.84 ,2.99)
Step-by-step explanation:
A random sample of 20 accounting students results in a mean of 2.92 and a standard deviation of 0.16
given small sample size n =20
sample mean x⁻ =2.92
sample standard deviation 'S' =0.16
level of significance ∝ = 0.95
The 95% of confidence intervals
the degrees of freedom γ=n-1 =20-1=19
t-table 2.093
(2.92-0.0748,2.92+0.0748)
(2.84 ,2.99)
Therefore the 95% of confidence intervals
(2.84 ,2.99)
The answer is 11 5/20 but simplified it is 11 1/4
Answer:
10
Step-by-step explanation:
if you add 5.5 + 5.5 together its 10
Y-6 = 15-6=9
2y+x= 2(15) + 3= 30+3 = 33
Answer:
m∠DCQ=56°
Step-by-step explanation:
step 1
Find the measure of arc ABC
we know that
The inscribed angle is half that of the arc it comprises
so
m∠D=(1/2)[arc ABC]
we have
m∠D=78°
substitute and solve for arc ABC
78°=(1/2)[arc ABC]
156°=[arc ABC]
Rewrite
arc ABC=156°
step 2
Find the measure of arc DC
we know that
arc ABC+arc AD+arc DC=360° -----< by complete circle
substitute the given values
156°+92°+arc DC=360°
arc DC=360°-248°
arc DC=112°
step 3
Find the measure of angle DCQ
we know that
The inscribed angle is half that of the arc it comprises
so
m∠DCQ=(1/2)[arc DC]
we have
arc DC=112°
substitute
m∠DCQ=(1/2)[112°]=56°