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djyliett [7]
3 years ago
6

A sample of 40 individuals at a shopping mall found that the mean number of visits to a restaurant per week was 2.88 with a stan

dard deviation of 1.59. Find a 99% confidence interval for the mean num-ber of restaurant visits. Use the appropriate formula and verify your result using the Confidence Intervals workbook.
Business
1 answer:
Katarina [22]3 years ago
3 0

Answer:

The confidence interval is between 2.23 and 3.53

Explanation:

The confidence interval (C) = 99% = 0.99

α = 1 - C = 1 - 0.99 = 0.01

α/2 = 0.01/2 = 0.005

The z score of α/2 corresponds to the z score of 0.495 (0.5 - 0.005) which is 2.576

The margin of error (E) is given as:

E=z_{\frac{\alpha}{2} }*\frac{\sigma}{\sqrt{n} }\\\\where\ n=sample\ size,\sigma=standard\ deviation\\\\Given\ that\ \sigma=1.59,n=40,z_{\frac{\alpha}{2} }=2.576\ hence: \\\\E=2.576*\frac{1.59}{\sqrt{40} } =0.65

The confidence interval = mean ± margin of error = 2.88 ± 0.65 = (2.23, 3.53)

The confidence interval is between 2.23 and 3.53

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A stock sells for $6.99 on December 31, providing the seller with a 6% annual return. What was the price of the stock at the beg
Dimas [21]

Answer:

Correct option is 6.59

Explanation:

Selling price of stock at the end of the year is $6.99. Annual return rate is 6%. Price of stock at the beginning will be present value of stock valued at the end discounted at 6%. Computation is as shown below:

Present\ value\ or\ price\ of\ stock = Selling\ price\left ( \frac{1}{1+i} \right )^{n}

= 6.99\left ( \frac{1}{1+0.06} \right )^{1}

= \frac{6.99}{1.06}

= $6.59

Therefore, Stock's price in the beginning of the year is $6.59.

6 0
3 years ago
One item that appears on an insurance company's financial statements is a liability that represents an estimate of the claims re
Bess [88]
<span>This liability is called the insurer's "loss reserve".</span>

Loss reserve<span> is a gauge of an insurer's liability from future cases. <span>Loss reserves</span> most often contain liquid resources, and they enable the insurer to cover claims made against strategies that it endorses. Assessing liabilities can be a difficult task. Insurers need to regulate loss reserve estimations as the situation change.</span>

8 0
3 years ago
Two carpenters at a cabinet company are interested in receiving a raise in salary. Matt has worked for many years at the company
son4ous [18]

Answer:

C.

Explanation:

Jason will get the raise because even though he is new he works hard like he's been there for years. Matt will not get it because even though he has worked there for a while he doesn't do his job good.

Explanation:

5 0
2 years ago
Read 2 more answers
Jennifer has been highly unproductive at work for the last few weeks and is counseled regarding organizational policies and rule
Anton [14]

Answer: positive

Explanation:

Based on the happening in he question, the method used is the positive discipline approach

This approach seeks ways to help an employee when the employee isn't being productive at his or her workplace. The positive actions are being seeked and necessary ways to bring the worker back to his or her feet will be utilized.

This is the method used in order to being Jennifer back on track and.make her productive again.

7 0
3 years ago
Bellucci Corporation has provided the following information: Cost per UnitCost per Period Direct materials$6.70 Direct labor$3.5
Nikolay [14]

Answer:

The incremental manufacturing cost that the company will incur if it increases production from 10,500 to 10,501 units is closest to $11.40

Explanation:

It is important to note that the question requires The incremental manufacturing cost that the company will incur if it increases production from 10,500 to 10,501 units

From Production of 10500 units to 10501 units, there is an increment of 1 unit.

<u>Lets find the incremental cost of 1 unit.</u>

1.To do this we only consider variable manufacturing costs only.

2.Since increase is within the relevant range, the fixed manufacturing overheads do not change.

3.Also Ignore all non- manufacturing overhead as they do not form part of manufacturing costs.

                                                         Extra 1 Unit

Direct materials                                    $6.70

Direct labor                                           $3.50

Variable manufacturing overhead     $1.20

Total Cost                                             $11.40

4 0
4 years ago
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