<span>I already seen the graph.
How many dollars more is the price of a muffin than the price of a brownie at David's store
Answer is 2$
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6 for $1.25= $1.25/6= $0.21
36 for $7.20= $7.20/36= $0.20
So the 36 ears for $7.20 is the better buy by 1cent
Answer:800
Step-by-step explanation:
dont know
Answer:
And we are confident that the true mean for this case is given by
Step-by-step explanation:
Data given
represent the sample mean for the WBC
population mean
s=3.9265 represent the sample standard deviation
n=187 represent the sample size
Confidence interval
The confidence interval for the true mean is given by:
[tex]\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}[/tex] (1)
The degrees of freedom, are given by:
The Confidence level is 0.90 or 90%, the significance is and , the critical value for this case would be
Replacng into the formula we got:
And we are confident that the true mean for this case is given by
Answer:one yard costs $15 (x=15)
Step-by-step explanation:
300-60=240. So, 16 yards=$240
16x=240
240/16=15
X=15 (one yard costs $15)