Answer:
165
Step-by-step explanation:
base x base x height
Answer:
There were 240 more credit card sales than cash sales.
Step-by-step explanation:
By using the ratio 8:3 I was able to determine that if there were 144 cash sales that would mean that there would be 384 credit card sales. However, the question asks "How many <u>more</u> credit card sales were there than cash sales?" Meaning that we need to find the difference. 384-144= 240.
This means that there were 240 <u>more</u> credit card sales than cash sales.
Hope this helped! If you have any questions about what I did please comment!
And if this helped please mark brainliest!
Have a great day!!
Answer:
Step-by-step explanation:whtyui
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helllooooooo
<span><span> x = 0</span>
<span> y = -x/2+2</span>
<span> z = -x-y+1
hope this helps fam :)</span></span>
A. The point estimate of μ1 − μ2 is calculated using the value of x1 - x2, therefore:
μ1 − μ2 = x1 – x2 =
7.82 – 5.99
μ1 − μ2 = 1.83
B. The formula for
confidence interval is given as:
Confidence interval
= (x1 –x2) ± z σ
where z is a value
taken from the standard distribution tables at 99% confidence interval, z =
2.58
and σ is calculated
using the formula:
σ = sqrt [(σ1^2 /
n1) + (σ2^2 / n2)]
σ = sqrt [(2.35^2 /
18) + (3.17^2 / 15)]
σ = 0.988297
Going back to the
confidence interval:
Confidence interval
= 1.83 ± (2.58) (0.988297)
Confidence interval
= 1.83 ± 2.55
Confidence interval
= -0.72, 4.38
