Answer:
10a
Step-by-step explanation:
10a is the same as 10 * a
product is multiplication
Answer:
There is no question but if your wondering how many adults there are there would be 20 adults in all and 3 kids are left over.
Step-by-step explanation:
Accuracy is basically how close the given amount is to the actual amount
Answer:
Step 4
Step-by-step explanation:
because 100/20=5
so 60/5=12
Standard deviation= σ= 0.1
Confidence interval= 95%= 0.95
Significance level=α= 1-0.95= 0.05
α/2 = 0.025
At α/2 z( α/2 ) =1.960 [from statistic table]
Now,
the sample size at error of 0.02 is
0.02=z( α/2 )σ/√n
0.02=(1.960)*(0.1)/√n
5/49 = 1/√n
√n=49/5
n=96.04
n should be 96 or greater