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neonofarm [45]
2 years ago
15

If the true mean is .9350 with a standard deviation of 0.0090, within what interval will 90 percent of the sample means fall? (r

ound your answers to 4 decimal places.)
Business
1 answer:
Tpy6a [65]2 years ago
4 0

μ = 183, σ = 20, n = 50. (Round your answers to 2 decimal places.)If the true mean is .9350 with a standard deviation of 0.0090

<h3>What is standard deviation?</h3>

The standard deviation is a statistic that expresses how much variance or dispersion there is in a group of numbers. While a high standard deviation suggests that the values are dispersed over a wider range, a low standard deviation suggests that the values tend to be close to the mean (also known as the anticipated value) of the collection.

The lower case Greek letter (sigma), for the population standard deviation, or the Latin symbol s, for the sample standard deviation, are most frequently used in mathematical texts and equations to indicate standard deviation. Standard deviation may be written as SD.

A random variable, sample, statistical population, data set, or probability distribution's standard deviation is equal to the square root of its variance.

To learn more about standard deviation from the given link:

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What would cause an increase in the equilibrium price of a good?
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Answer:

Demand and supply

Explanation:

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5 0
3 years ago
An investment earned the following returns over a four-year period: 28 percent, 21 percent, 1 percent, and -36 percent. What is
riadik2000 [5.3K]

Answer:

A) 0.0618

Explanation:

Variance is given by:

V = \frac{\sum(Xi - \mu)^2}{n}

Where 'Xi' is the value for each term 'i' in the sample of size 'n' and μ is the sample mean.

The mean investment return is:

\mu = \frac{0.28+0.21+0.01-0.36}{4} \\\mu = 0.035

The variance is:

V = \frac{\sum(Xi - \mu)^2}{n}\\V = \frac{(0.28- 0.035)^2+(0.21- 0.035)^2+(0.01- 0.035)^2+(-0.36- 0.035)^2}{4}\\V= 0.0618

The variance of the returns on this investment is A) 0.0618.

4 0
3 years ago
Which of the following statements are true? All costs in a merchandising company are period costs. Inventoriable costs are expen
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Answer:

Period costs are expensed when incurred and Period costs do not flow through the inventory accounts.

Explanation:

Period Costs are not included in the valuation of the product and these mostly include all non-manufacturing costs. They are included as an expense in the period in which they are incurred.

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3 years ago
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D is the answer to this question. Hope this helps.

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ratelena [41]
The right answer for the question that is being asked and shown above is that: "B. debit to Sales Returns and Allowances for $125.00. " Five necklaceswere returned prior to payment. The entry to record the return would include a B. debit to Sales Returns and Allowances for $125.00. 
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3 years ago
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