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Zielflug [23.3K]
3 years ago
15

A marketing researcher wants to estimate the mean amount spent (S) on Amazon.com by Amazon Prime member shoppers. Suppose a rand

om sample of 100 Amazon Prime member shoppers who recently made a purchase on Amazon.com yielded a mean of $1,500.
a. Suppose the standard deviation of the amount spent ($) on Amazon.com is $200. Construct a 95% confidence interval estimate for the mean spending for all Amazon Prime member shoppers.
b. Suppose the standard deviation of the sample of 100 Amazon Prime member shoppers is $200. Construct a 95% confidence interval estimate for the mean spending for all Amazon Prime member shoppers.
Business
1 answer:
Kazeer [188]3 years ago
4 0

Answer:

The answer is below

Explanation:

a)

Given that mean (μ) = $1500, standard deviation (σ) = $200, sample size (n) = 100

confidence (C) = 95% = 0.95

α = 1 -  C = 1 - 0.95 = 0.05

α/2 = 0.05 / 2 = 0.025

The z score that corresponds with 0.475 (0.5 - 0.025) is 1.96. Therefore the margin of error (E) is:

E = z_\frac{\alpha}{2} *\frac{\sigma}{\sqrt{n} } \\\\E=1.96*\frac{200}{\sqrt{100} } =39.2\\

The confidence interval = (μ ± E) = (1500 ± 39.2) = (1500 - 39.2, 1500 + 39.2) = (1460.8, 1539.2)

The confidence interval is between $1460.8 and $1539.2.

b) Given that mean (μ) = $1500, standard deviation for 100 samples =  σ /√n = $200,

confidence (C) = 95% = 0.95

E = z_\frac{\alpha}{2} *\frac{\sigma}{\sqrt{n} } \\\\E=1.96*200=392\\

The confidence interval = (μ ± E) = (1500 ± 392) = (1500 - 392, 1500 + 392) = (1108, 1892)

The confidence interval is between $1108 and $1892.

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Sloan [31]

Answer:

controllable margin for the year is $180,000.

Explanation:

The Controllable Margin is the Profit that is controllable by the divisional manager.

<u>Calculation of Controllable Margin : </u>

Contribution Margin                 $360,000

Less Controllable fixed costs ($180,000)

Division Controllable Margin    $180,000

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3 years ago
Nazerhy deposits $8,000 in a certificate of deposit. the annual interest rate is 6%, and the interest will be compounded quarter
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Nazerhy deposits $8,000 in a certificate of deposit. the annual interest rate is 6%, and the interest will be compounded quarterly. The certificate worth 10 years is $14,555.17.

<h3>What do you mean by deposit?</h3>
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<h3>What is the interest rate?</h3>
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brainly.com/question/13324776

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5 0
2 years ago
Spicy Dish, a large distributor of canned beans and salsa, is organized into four business units: (1) North America Salsa, (2) N
tatyana61 [14]

The options in this question are missing; here is the missing section:

What two types of departmentalization are illustrated in this example?

A. Product and customer

B. Product and geographical

C. Customer and geographical

D. Functional and customer

E. Geographical and functional

The answer to this question is B. Product and geographical

Explanation:

Departmentalization refers to the creation of departments, units, etc. in businesses to better achieve goals and distribute roles and activities. This can be based on location, products, function, etc.

In the case of Spicy Dish, there is a clear geographical departmentalization because this distributor has created units based on location, due to this, the company has a unit in each major geographical region such as North America, Europe, etc. Moreover, this company has created units based on products because in North America they created two different units and each specializes in one of their products (beans/salsa.)

3 0
4 years ago
Why is it a good idea to invest in both bonds and stocks?
larisa [96]
Stocks and bonds each have a different level of risk and behave differently in response to changes in the financial markets. They may also be key ingredients in your mutual funds.

Putting portions of your money into different types of investments could help you in case some of them don’t measure up.
8 0
3 years ago
Read 2 more answers
You decide you want to be a millionaire. You deposit $50,000 in an investment account that earns 9% per year. The money in the a
romanna [79]

Answer: 35 years

Explanation:

A=P(1+\frac{r}{n})^{nt}

Where,

A - the ending amount,

P - the beginning amount (or "principal")

r - the interest rate (expressed as a decimal)

n - the number of compounding a year

t - the total number of years

n=1, t=?, P = $50,000, r=0.09, A= $1,000,000

Therefore,

1,000,000=50,000(1+\frac{0.09}{1})^{t}

1,000,000=50,000(1.09)^{t}

20=(1.09)^{t}

Taking log on both sides

log(20) = t log(1.09)

1.30103 = 0.0374264979 t

t = 34.7622

So answer is 35 years.

3 0
3 years ago
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