Answer:
The answer is, The student added only three of the five faces.
Step-by-step explanation:
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$8250 - $3120 = $5130
$5130/75 = $68.40
Each band member must raise $68.40
Answer and explanation:
Null hypothesis: p is not 54%
Alternative hypothesis : p is equal 54%
First find standard deviation
Standard deviation is:
σ = √[ P ( 1 - P ) / n ] = √[ 0.54×0.46/220 ] =0.033
The z score is calculated p-P/σ = (0.54-0.50)/0.033 = 1.2121
Therefore we can conclude that proportions are not same and fail to reject the null hypothesis
Answer:
8
Step-by-step explanation:
140-122=18
18-10=8
4-7x=5
+7x +7x
4= 12x
/12 /12
x= 4/12
x= 1/3
