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True [87]
3 years ago
6

Enter an algebraic expression to model the given context. Give your answer in simplest form.

Mathematics
1 answer:
Mazyrski [523]3 years ago
4 0
8% sales tax is 8% of the sales price =  8% of 's'
8% of 's' = 0.08 × s = 0.08s

The total price = s + 0.08s ⇒ this is the expression
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2 years ago
The z-score associated with 95% is 1.96. If the sample mean is 200 and the standard deviation is 30, find the upper limit of the
ziro4ka [17]

Answer:

The upper limit of the 95% confidence interval is:

C.I_u = 200 + (58.8/\sqrt{n})

Step-by-step explanation:

The formula is given as:

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The upper limit => C.I_u = μ + Z*σ/\sqrt{n}

The lower limit => C.I_l = μ - Z*σ/\sqrt{n}

The sample size (n) is not stated in the question. Hence, we calculate the upper limit with respect to n.

The upper limit => C.I_u = 200 + 1.96*(30/\sqrt{n})

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                                    = 200 + 58.8/\sqrt{n}

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Answer:

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Step-by-step explanation:

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