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Furkat [3]
3 years ago
10

40000 mg = 10x g. what is value of x

Mathematics
1 answer:
Serjik [45]3 years ago
7 0
Given:
40,000 mg = 10x g

1 gram is equal to 1000 milligram

40,000 mg * 1 gram/1,000 mg = 40,000 g / 1,000 = 40 gram

40 grams = 10x g
40 grams / 10 grams = x
4 = x

The value of x is 4.

40000 mg = 10x g
40000 mg = 10(4) g
40000 mg = 40 g
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Suppose a sample of 100 families of four vacationing at Niagara Falls resulted in sample mean of $282.45 spent per day and a sam
Juli2301 [7.4K]

Given Information:

Mean = μ = $282.45

Standard deviation = σ = $64.50

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Required Information:  

95% Confidence interval = ?

Answer:

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Step-by-step explanation:

We are given a Normal Distribution, which is a continuous probability distribution and is symmetrical around the mean. The shape of this distribution is like a bell curve and most of the data is clustered around the mean. The area under this bell shaped curve represents the probability.

What is Confidence Interval?

The confidence interval represents an interval that we can guarantee that the target variable will be within this interval for a given confidence level.  

The confidence interval is given by

CI = \bar{x} \pm MoE\\

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MoE = z_{\alpha/2}(\frac{\sigma}{\sqrt{n} } ) \\

Where σ is the standard deviation, n is the sample size and z_{\alpha/2} is the z-score corresponding to 95% confidence level.

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Therefore, we are 95% sure that the true population mean amount spent per day by a family of four visiting Niagara Falls is within the interval of ($269.81, $295.09)

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