The accompanying data file contains 20 observations for t and y_t.

The data are plotted below.

b-1. Use the exponential smoothing method to make forecasts with α = 0.2. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.)

b-2. Compute the resulting MSE and MAD. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.)

c-1. Use the exponential smoothing method to make forecasts with α = 0.4. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.)

c-2. Compute the resulting MSE and MAD. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.)

d. Use the appropriate value of α to make a forecast for period 21. (Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.)

yˆty^t    

(Y-Hat sub t)

Exhibit 10-4
Use the following information and the PopMeanDiff template to answer the following about two samples of women and their ages when their first child turned 16 years old. Population variance and standard deviations are unknown.

​

   
Sample 1

Sample 2

Sample mean  
45

42

Sample variance  
85

90

Sample size  
10

12

​

Refer to Exhibit 10-4. The 95% confidence interval for the difference between the two population means is _____.
Question 1 options:

–5.367 to 11.367

–5 to 3

–4.86 to 10.86

–2.65 to 8.65
Question 2 (1 point)
Exhibit 10-4
Use the following information and the PopMeanDiff template to answer the following about two samples of women and their ages when their first child turned 16 years old. Population variance and standard deviations are unknown.

​

   
Sample 1

Sample 2

Sample mean  
45

42

Sample variance  
85

90

Sample size  
10

12

​

Refer to Exhibit 10-4. The standard error of is _____.
Question 2 options:

3.0

4.0

8.372

19.48
Question 3 (1 point)
Exhibit 10-4
Use the following information and the PopMeanDiff template to answer the following about two samples of women and their ages when their first child turned 16 years old. Population variance and standard deviations are unknown.

​

   
Sample 1

Sample 2

Sample mean  
45

42

Sample variance  
85

90

Sample size  
10

12

​

Refer to Exhibit 10-4. The point estimate for the difference between the means of the two populations is _____.
Question 3 options:

0

2

3

15
Question 4 (1 point)
Exhibit 10-4
Use the following information and the PopMeanDiff template to answer the following about two samples of women and their ages when their first child turned 16 years old. Population variance and standard deviations are unknown.

​

   
Sample 1

Sample 2

Sample mean  
45

42

Sample variance  
85

90

Sample size  
10

12

​

Refer to Exhibit 10-4. The degrees of freedom for the t distribution are _____.
Question 4 options:

22

21

20

19

A- A truck has a mass of 900 kilograms.

If the velocity of the truck is 20 m/s, what is its momentum?

1- 180000 kg·m/s

2-0 kg·m/s

3-9000 kg·m/s

4-18000 kg·m/s

B- If the truck is brought to a complete stop, what is the magnitude of the impulse that must be imparted to it?

1-18000 N·s

2-0 N·s

3- 9000 N·s

4-180000 N·s

C-If it takes 8 seconds to bring the truck to a stop, what is the magnitude of the force required to stop it?

1-1 × 105 N

2-0 N

3-0.0004 N

4-2250 N

1. Would the ratio of isomeric heptenes change if potassium tert-butoxide were used in place of DBU? Explain your reasoning.

2. cis-1-Bromo-4-methylcyclohexane undergoes E2 elimination faster than trans-1-bromo-4-methylcyclohexane. Explain your reasoning in terms of mechanism.

3. The lab ran out of xylene. You have your choice of methanol and tert-butanol. Which would you choose and why.

4. When treated with DBU, (1-chloropropyl)benzene and (2-chloropropyl)benzene give the same product but (2-chloropropyl)benzene reacts faster. Explain the results in terms of mechanism.

Consider the experiment of rolling a six-sided fair die. Let X

denote the number of rolls it takes to obtain the first 5,

Y denote the number of rolls until the first 2, and Z denote

the number of rolls until the first 4. Numerical answers are needed only for parts (a) and

(b). Expressions are sufficient for parts (c), (d), and (e).

a) E[X|Y = 1 or Z = 1]

b) E[X|Y = 1 and Z = 2]

c) E[X|Y = 1 and Z = 3]

d) E[X|Y = 3 and Z = 4]

e) E[X^2 |Y = 3 and Z = 4]

The yield on a one year bond is 3%. The expected yield on a one year bond, one year in the future is 4%. The expected yield on a one year bond in 2 years is 5%. The liquidity premium 0.5(n-1)%. The "3-2" spread is _____ .

1. -.5%
2. -1%
3. 0%
4. 0.5%
5. 1%

The yield on a one year bond is 3%. The expected yield for the one year bond a year later is 4%. The expected yield for the one year bond in 2 years is 5%. According to the expectations hypothesis, the yield on a three year bond should be _____.

a.3%

b.4%

c.5%

d.None of the above

Choose the correct answer from the followings:

a) In Wheatstone bridge, when it is balanced the galvanometer reads

1. Infinity 2. Zero 3. 5 mA 4. 10 mA
b) In PMMC, dumping force helps .............

1. To move the pointer to read our measurements correctly 2. To reset our readings back to zero 3. To stabilize the pointer during transition between readings 4. All the above
c) A current transformers are used for:

1. For cost effective measurement 2. For protections 3. To reduce the cost of relay and circuit-breaker in high current enviroemnt 4. All the above

in java. using the following template as a method,

public static void shellSort(int[] array) {

create a program that counts the number of comparisons and swaps of the sorting method does using

int array1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; // Best Case Test
int array2[] = {10, 9, 8, 7, 6, 5, 4, 3, 2, 1}; // Worst Case Test
int array3[] = {10, 4, 8, 2, 6, 1, 9, 3, 7, 5}; // Average Case Test

and have the counsel print out the results.

Please finish the following assignment in Excel.

1. Ignoring price, create a chart that displays the seasonality of cranberry sales.
2. Ignoring price, create a chart that shows whether there is an upward trend in sales.
3. Determine average sales per quarter, breaking it down based on whether your price was higher or lower than the competitor’s price. You can use the following function to transform the price into a category variable:  “=IF(J14<K14,"Higher Price", "Lower Price")”

73 Suppose the price of pepperoni falls. In the market for pizza, in which pepperoni of a popular ingredient, one would expect that

1 the supply of pizza would increase, and the price would fall
2 the demand for pizza would increase, and the price would increase
3. the demand for pizza would decrease, and the price would fall
4. the supply of pizza would decrease, and the price would rise

71 Suppose that consumer income INCREASES and that ground meat is an inferior good. Which of the following will occur in the market for ground meat?
1. market clearing price will rise, and equilibrium quantity will rise
2 market clearing price will fall, and equilibrium quantity will fall
3 Market clearing price will rise, and equilibrium quantity will fall
4 market clearing price will fall, and equilibrium quantity will rise

63.

In the above table, the marginal product of the fourth worker is
1 30
2 25
3 20
4 14

60 A Price ceiling set below a market equilibrium price causes
1. surplus
2. shortage
3. producers to receive higher prices
4. consumers to pay higher prices

61. price floors
1. provide free-market incentives for producers
2 create surpluses by setting the price above equilibrium
3 create shortages by setting the price above equilibrium
4 are used by advocates of the free market