Answer:
19.5
Step-by-step explanation:
Answer:
<em>The calculated value Z=1.2413 < 1.96 at 0.05 level of significance</em>
<em>Null hypothesis is accepted </em>
<em>An instructor in the English department at CBC believes rates at CBC may be equal to the state average</em>
Step-by-step explanation:
<u><em>Step(i):-</em></u>
<em>Given Population proportion </em>
<em> P=68%= 0.68</em>
<em>Sample proportion </em>
<em> </em>
<em></em>
<em>Null hypothesis : H₀ : p = 0.68</em>
<em>Alternative Hypothesis :H₁ : p > 0.68</em>
<u><em>Step(ii)</em></u><em>:-</em>
<em>Test statistic</em>
<em> </em>
<em></em>
<em> </em>
<em></em>
<em> Z = 1.2413</em>
<em>Level of significance </em>
<em> </em>
<em></em>
<em>The calculated value Z=1.2413 < 1.96 at 0.05 level of significance</em>
<em>Null hypothesis is accepted </em>
<em>An instructor in the English department at CBC believes rates at CBC may be equal to the state average</em>
<em></em>
<em></em>
Answer:
Step-by-step explanation:
n and d are the number of nickels and dimes, respectively.
"there are 20 coins"
n+d = 20
d = 20-n
"total value is $1.40"
0.05n + 0.10d = 1.40
0.05n + 0.10(20-n) = 1.40
-0.05n + 2 = 1.40
0.05n = 0.6
n = 12
d = 20-m = 8
107
simplify or expand: 535/5
— 107 !!!!!!!!!! so b
Answer:
A
Step-by-step explanation:
5in=84in
scale factor is 16.8 (84/5)
(21x12)/16.8=15
(28x12)/16.8= 20