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Olenka [21]
3 years ago
12

Do women spend more time talking on the phone than​ men? a student collects data from students at her university and reports a​

90% confidence interval for mu​(men)minusmu​(women) to be ​(minus​150,30), where mu​(men) is the mean number of minutes per month for men. based on this confidence​ interval, can it be concluded that mu​(women) is higher than mu​(men)?
Business
1 answer:
zalisa [80]3 years ago
3 0

<u>Answer</u>:

<u>No</u>

Explanation:

Remember, that as used in statistics the Confidence intervals <em>only</em> ascertain the extent to which a sample is uncertainty or certainty, that is, the student report of a​ 90% confidence interval is just a probability the university population of men and women surveyed would fall under this range of value ​(minus 150,30).

Therefore, it cannot be concluded that mu​(women) is higher than mu​(men.

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_______________is concerned with what is​, and ▼ positive analysis neutral analysis normative analysis is concerned with what ou
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Answer:

The correct answer is normative analysis.

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3 0
3 years ago
Road Gripper Tire Co. manufactures automobile tires. Standard costs and actual costs for direct materials, direct labor, and fac
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Answer:

Answer is explained in the explanation section below.

Explanation:

Solution:

a.

In part a, we need to find the following 3 requirements:

1. Direct Materials Price Variance

2. Direct Materials Quantity Variance

3. Total Direct Materials Cost Variance

Direct Materials Price Variance:

It can be calculated by using the following formula:

DMPV = AQ multiplied by (AP minus the SP)

Where,  

DMPV = Direct Materials Price Variance

AQ = Actual Quantity

AP = Actual Price

SP = Standard Price

We do have all the data, so just plug in the values into the above equation to get the DMPV.

AQ = 101,000

AP  = 6.50 USD

SP = 6.40 USD

So,

DMPV = 101,000 ( 6.50 - 6.40)

DMPV = 10,100 USD

Direct Materials Quantity Variance:

DMQV = SP ( AQ - SQ )

Where,

DMQV = Direct Materials Quantity Variance = ?

SP  = Standard Price  = 6.40 USD

AQ = Actual Quantity  = 101,000

SQ = Standard Quantity  = 100,000

Plugging in the values:

DMQV  = 6.40  ( 101,000 - 100,000)

DMQV = 6400 USD

Total Direct Materials Cost Variance:

DMCV = SMC - AMC

Where,

DMCV =  Direct Materials Cost Variance = ?

SMC = Standard Market Cost = 6.40 USD x 100,000

AMC = Actual market Cost = 6.50 USD x 101,000

DMCV = (6.40 USD x 100,000) - (6.50 USD x 101,000)

DMCV = 640,000 - 656,500

DMCV =  16,500 USD

b.

For part b, we need following particulars:

1. Direct Labor Rate Variance (DLRV)

2. Direct Labor Time Variance (DLTV)

3. Direct Labor Cost Variance  (DLCV)

Direct Labor Rate Variance (DLRV) :

DLRV = (ADLR - SDLR) x ADLH

Where,

ADLR  = Actual Direct Labor Rate = 15.40 USD

SDLR = Standard Direct Labor Rate = 15.75 USD

ADLH = Actual Direct Labor Hour = 2000

So,

DLRV = (ADLR - SDLR) x ADLH

DLRV =  (15.40 USD  - 15.75 USD  ) x 2000

DLRV = 700 USD

Direct Labor Time Variance (DLTV):

DLTV = ( ADLH - SDLH ) x SDLR

SDLH = Standard Direct Labor Hour = 2080

DLTV = ( 2000  - 2080 ) x 15.75 USD  

DLTV = 1260 USD

Direct Labor Cost Variance  (DLCV)

DLCV = SDLC - ADLC

SDLC = Standard Direct Labor Cost  

ADLC = Actual Direct Labor Cost

DLCV =  (1540 x 2000) - (15.75 x 2080)

DLCV = 1960 USD

c.

For Part c, we need following:

1. variable factory overhead controllable variance (VFOCV)

2. fixed factory overhead volume variance (FFOVV)

3. Total factory overhead cost variance (TFOCV)

variable factory overhead controllable variance (VFOCV):

VFOCV =  AFO - B

Where,

AFO = Actual Factory Overhead  = 8200

B = Budgeted Allowance Based on Standard Hours Allowed = 4160x0.5x4

B = 8320 USD

VFOCV =  8200 - 8320  

VFOCV =   120 USD

fixed factory overhead volume variance (FFOVV) :

FFOVV = (S - BH ) x SOR

Where,

S = Standard Hours for actual output = 4160 x 0.5

BH = Budgeted Hours = 2080

SOR = Standard Overhead Rate = 6 USD

FFOVV = (4160 x 0.5  - 2080) x 6

FFOVV =  0 USD

Total factory overhead cost variance (TFOCV):

TFOCV = AFO - SO

Where,

AFO = Actual Factory Overhead = 20,200

SO = Standard Overhead = 2080 x 10

TFOCV =  20,200 - ( 2080 x 10  )

TFOCV =  600 USD

7 0
3 years ago
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