2.
A food product company,
manufacturer two products: 'Petrol' and Oil'. The Information
related to...
2.
A food product company,
manufacturer two products: 'Petrol' and Oil'. The Information
related to Sales during the last period is as follows:
Petrol
Oil
Budgeted
Sales
8,
000
4 000
Actual Sales
6,
000
7,000
Standard Costs and revenues per unit of Petrol and Oil are as
follows:
Petrol
Oil
Sales
18 per
Unit
10 liters 600 SAR
Direct
Material
5 Per
Unit
10 liters 200 SAR
Direct
Labor
2 Per
Unit
10 liters 100 SAR...
Suppose that we want to test the null hypothesis that the mean
of population 1 is...
Suppose that we want to test the null hypothesis that the mean
of population 1 is equal to the mean of population 2. We select a
random sample from population 1 and a random sample from population
2, and these two samples are independent. Circle the FALSE
statement.
A. We need to perform a two-sided test.
B. If we know the variance of each population, even if they are
different, we can use the Z test. That is, the test...
Brevard Industries
produces two products. Information about the products is as
follows:
Product 1
Product 2...
Brevard Industries
produces two products. Information about the products is as
follows:
Product 1
Product 2
Units produced
and sold
4,150
10,200
Selling price
per unit
$
15
$
13
Variable costs
per unit
9
8
The company's fixed costs totaled $72,000, of which $15,200 can be
directly traced to Product 1 and $40,200 can be directly traced to
Product 2. The effect on the firm's profits if Product 2 is dropped
would be a:
$10,800 increase.
$35,800 increase.
$35,800...
We have productivity data from 2 mills
Data from Mill 1: 10,18,21,22,22,23,25,28,29,32,36,40,42
Data from Mill 2:...
We have productivity data from 2 mills
Data from Mill 1: 10,18,21,22,22,23,25,28,29,32,36,40,42
Data from Mill 2:
13,13,13,15,16,16,18,19,19,19,21,22,22,23,23,24,27,32
Calculate the mean and standard deviation for Mill 1
Calculate the mean and standard deviation for Mill 2
Assume the two are normal distributions, and the standard
devisations are correct for the two populations the mills are drawn
from. Finally assume the population mean for the two distributions
are the same.
Use the same variance rules to calculate the variance of the
difference...
Two plots at Rothamsted Experimental Station were studied for
production of wheat straw. For a random...
Two plots at Rothamsted Experimental Station were studied for
production of wheat straw. For a random sample of years, the annual
wheat straw production (in pounds) from one plot was as
follows.
6.61
6.40
5.84
6.82
7.31
7.18
7.06
5.79
6.24
5.91
6.14
Use a calculator to verify that, for this plot, the sample
variance is s2 ≈ 0.304.
Another random sample of years for a second plot gave the following
annual wheat production (in pounds).
7.87
5.70
7.24
5.98...
I. Solve the following problem:
For the following data:
1, 1, 2, 2, 3, 3, 3,...
I. Solve the following problem:
For the following data:
1, 1, 2, 2, 3, 3, 3, 3, 4, 4, 5, 6 n = 12
b) Calculate
1) the average or average
2) quartile-1
3) quartile-2 or medium
4) quartile-3
5) Draw box diagram (Box & Wisker)
II. PROBABILITY
1. Answer the questions using the following
contingency table, which collects the results of a study to 400
customers of a store where you want to analyze the payment
method.
_______B__________BC_____
A...
Two plots at Rothamsted Experimental Station were studied for
production of wheat straw. For a random...
Two plots at Rothamsted Experimental Station were studied for
production of wheat straw. For a random sample of years, the annual
wheat straw production (in pounds) from one plot was as
follows.
6.75 6.26 6.96 5.77 7.31 7.18
7.06 5.79 6.24 5.91 6.14
Use a calculator to verify that, for this plot, the sample
variance is s2 ≈ 0.334.
Another random sample of years for a second plot gave the
following annual wheat production (in pounds).
8.15
5.91
6.19
7.10...
Two plots at Rothamsted Experimental Station were studied for
production of wheat straw. For a random...
Two plots at Rothamsted Experimental Station were studied for
production of wheat straw. For a random sample of years, the annual
wheat straw production (in pounds) from one plot was as
follows.
6.54
6.12
6.40
6.47
7.31
7.18
7.06
5.79
6.24
5.91
6.14
Use a calculator to verify that, for this plot, the sample
variance is s2 ≈ 0.263.
Another random sample of years for a second plot gave the following
annual wheat production (in pounds).
6.75
7.66
6.61
7.17...
Two plots at Rothamsted Experimental Station were studied for
production of wheat straw. For a random...
Two plots at Rothamsted Experimental Station were studied for
production of wheat straw. For a random sample of years, the annual
wheat straw production (in pounds) from one plot was as
follows.
6.61
6.40
5.84
6.82
7.31
7.18
7.06
5.79
6.24
5.91
6.14
Use a calculator to verify that, for this plot, the sample
variance is s2 ≈ 0.304.
Another random sample of years for a second plot gave the following
annual wheat production (in pounds).
7.87
5.70
7.24
5.98...