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I am Lyosha [343]
3 years ago
9

A design engineer wants to construct a sample mean chart for controlling the service life of a halogen headlamp his company prod

uces. He knows from numerous previous samples that this service life is normally distributed with a mean of 500 hours and a standard deviation of 20 hours. On three recent production batches, he tested service life on random samples of four headlamps, with these results:
Sample SERVICE LIFE

1 495 500 505 500

2 525 515 505 515

3 470 480 460 470

What is the sample mean service life for sample 2?

A) 460 hours

B) 495 hours

C) 515 hours

D) 525 hours
Business
1 answer:
andreyandreev [35.5K]3 years ago
3 0

Answer:

C) 515 hours

Explanation:

The mean is the central value of set of numbers.

It is calculate by adding all the values together and then, divide by the quantity of items

 ∑ x

--------

  n

∑ =525 + 515 + 505 + 515 = 2,060

now we divide this value by the total number of items. Notice we take four headlamps so we divide by tis amount:

Mean = 2,060 / 4 = 515

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According to the TREC promulgated Seller's Temporary Lease, how long does the landlord have to itemize and provide to the tenant
lora16 [44]

Answer:

30 days.

Explanation:

It is illegal for the landlord to deduct from the security post because it belongs to the tenant. But if there is any damage or breach by the tenant, the landlord can deduct the security post. In this case there must a 30-day advance notice stating that the tenant will forfeit the right to security post.

8 0
3 years ago
The fixed cost of a business:
REY [17]

Answer:

B)do not vary based on how many customers the company serves

Explanation:

Fixed costs are defined as expenses that do not change as a function of the activity of a business, within the relevant period. For example, a retailer must pay rent and utility bills irrespective of sales. Some examples of fixed costs include rent, insurance premiums, or loan payments. A fixed cost is a cost that does not change with an increase or decrease in the amount of goods or services produced or sold. Fixed costs are expenses that have to be paid by a company, independent of any specific business activities.

5 0
4 years ago
Phoenix Pump and Filter projects that the cost of steel bodies for Model R910 valves will increase by $2.50 every 3 months. If t
katrin2010 [14]

Answer:

$1023.98

Explanation:

Using the standard notation equation for annual payment and for arithmetic gradient to calculate the present worth of a unit's costs; we have the following corresponding expression.

P = A (P/A, i, n)         &     P = G (P/G, i, n)

where;

A = annual payment

G = arithmetic gradient

n = number of years

i = annual interest rate

From the question;

the payment  period = compounding period

∴ quaterly interest rate = 3%

The present worth value of the unit's cost is therefore shown as

P = 90 (P/A, 3%, 12) + 2.5(P/G, 3%, 12)

P = 90(9.954) + 2.5(51.2481)

P = $1023.98

∴ The present worth value of the unit's cost = $1023.98

7 0
3 years ago
Barry's Hobbies produces and sells a luxury animal pillow for $80.00 per unit. In the first month of operation, 3,000 units were
Alla [95]

Answer:

The correct answer is B.

Explanation:

Giving the following information:

In the first month of operation, 3,000 units were produced and 2,250 units were sold.

Actual fixed costs are the same as the amount budgeted for the month.

Other information for the month includes:

Variable manufacturing costs $38 per unit

Variable marketing costs $ 2 per unit

Fixed manufacturing costs $60,000 per month

Administrative expenses, all fixed $12,000 per month

Finished goods 750 units

Absorption costing= variable manufacturing costs + fixed overhead

Absorption costing= 38 + (60,000/3,000)= $58

Cost of goods sold= 58*2,250= $130,500

5 0
3 years ago
Jasper Company provided the following information for last year: Costs Amount Sales in units 285,000 Selling price $17 Direct ma
yKpoI14uk [10]

Answer:

Instructions are listed below.

Explanation:

Giving the following information:

Sales in units 285,000

Selling price $17

Direct materials $143,000

Direct labor $503,000

Manufacturing overhead $110,000

Selling expense $439,000

Administrative expense $860,000

A) Sales revenue= 285,000 units* $17= $4,845,000

B) Income statement:

Sales revenue= 4,845,000

COGS= (DM + DL + Overhead)= (756,000)

Gross profit= 4,089,000

Selling expense= (439,000)

Administrative expense= (860,000)

Net operating income= 2,790,000

4 0
4 years ago
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