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jeyben [28]
3 years ago
13

A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x-bar, is found to be

108, and the sample standard deviation, s, is found to be 17. Construct a 95% confidence interval for μ if the sample size, n, is 81. Hint: Calculate E and round to 1 decimal place. Then construct the interval by putting parenthesis around the lower bound and upper bound separated by a comma).
Business
1 answer:
Verdich [7]3 years ago
7 0

Answer:

95% confidence interval is (104.2, 111.8)

Explanation:

Mean = 108, sd = 17, n = 81, degree of freedom = n-1 = 81 - 1 = 80. t-value corresponding to 80 degrees of freedom and 95% confidence level is 1.990

Confidence Interval = Mean + or - Error margin

Error margin (E) = (t×sd)/√n = (1.990×17)/√81 = 33.83/9 = 3.8

E = 3.8

Lower bound = mean - E = 108 - 3.8 = 104.2

Upper bound = mean + E = 108 + 3.8 = 111.8

95% confidence interval is (104.2, 111.8)

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RAK Co. wants to issue new 20-year bonds for some much-needed expansion projects. The company currently has 5.7 percent coupon b
Hatshy [7]

Answer:

5.31%

Explanation:

FV = 1000

Coupon rate = 5.7%

No of compound = 2

Interest per period = $28.5

Bond price = $1048

No of years to maturity = 20

No of compounding till maturity = 40

Coupon rate set on new bonds = Rate(Nper, PMT, -PV, FV) * 2

Coupon rate set on new bonds = Rate(40, 28.5, -1048, 1000) * 2

Coupon rate set on new bonds = 0.02655 * 2

Coupon rate set on new bonds = 0.0531

Coupon rate set on new bonds = 5.31%

7 0
3 years ago
A loan processing operation that processes an average of 7 loans per day. The operation has a design capacity of 15 loans per da
anyanavicka [17]

Answer:

a) 46.7, 80 b) 20, 60   c) yes

Explanation:

a) % utilization= utilization/design capacity × 100

                       = 7/15 × 100

                       = 46.7%

   % efficiency= efficiency/design capacity × 100

                              = 12/15 × 100

                                  =80%

b) Utilization= 2/10 × 100 = 20%

 Efficiency= 6/10 × 100= 60%

c) A system with higher efficiency ratios will always have higher utilization as these systems will have lesses number of failures

6 0
4 years ago
If a company produces many different products, it will develop a standard cost for each type of product. true false
saveliy_v [14]

True. A company will develop a standard cost for each product type if it produces many different products.

The process cost system should be used when manufacturing is efficient and continuous. This system's equivalent units method successfully represents the challenging problem of determining how much work the Work in Process entails.

Process costing explains how to use the concept of equivalent units to assign manufacturing costs to the units produced. Businesses may create and market various goods, or at the very least, multiple versions of the same product. Most of the time, manufactured goods are connected in terms of consumption or production. The firm's output and pricing decisions must consider the relationships between the items when they are related.

Learn more about Standard Cost here:

brainly.com/question/14754704

#SPJ4

4 0
2 years ago
Sustainable Growth Rate You have located the following information on Rock Company: debt ratio = 46.5%, capital intensity ratio
Sliva [168]

Answer:

The correct answer is 10.72% ( Approx.).

Explanation:

According to the scenario, the given data are as follows:

Debt ratio = 46.5%

Capital intensity ratio = 2.51 times

Profit margins = 21%

Dividend payout = 38%

Formula to calculate sustainable growth rate ae as follows:

Sustainable growth rate = (Earnings retention rate × Return on equity ) / ( 1 - (ROE × RR)

where, Retention rate =(1 - dividend payout rate)

= (1-0.38) = 0.62

ROE = Profit margin × Total asset turonver × Equity multipler

= Profit margin × 1/capital intensity ratio × 1/(1-debt ratio)

= .21 × (1/2.51) × 1/(1-.465)

= .21 × 0.398 × 1.869

= 0.1562

=15.62%

So, Sustainable growth rate = (0.1562*0.62) / 1 - (0.1562*0.62)

= 0.096844 / 0.903156

= 0.1072

= 10.72% (approx.)

Hence, the correct answer is 10.72% (approx.).

7 0
4 years ago
Marvin Gaye's song "Gotta Give It Up" was protected by ___________ .
monitta

Answer:

d. not selected option d copyright

6 0
4 years ago
Read 2 more answers
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