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What is the importance of bryophyte economical and ecological

Question 1. Design a DAC using inverting OPAMP for 3-bit binary value and verify the analog output for the same

Take: Rf=1MΩ

            R=1KΩ

            Vref= -5 V

Preble Company manufactures one product. Its variable manufacturing overhead is applied to production based on direct labor-hours and its standard cost card per unit is as follows:

The company also established the following cost formulas for its selling expenses:

The planning budget for March was based on producing and selling 28,000 units. However, during March the company actually produced and sold 33,000 units and incurred the following costs:

1. Purchased 165,000 pounds of raw materials at a cost of $7.20 per pound. All of this material was used in production.

2. Direct-laborers worked 58,000 hours at a rate of $13.00 per hour.

3. Total variable manufacturing overhead for the month was $729,060.

4. Total advertising, sales salaries and commissions, and shipping expenses were $240,000, $470,000, and $145,000, respectively.

10. What is the variable overhead efficiency variance for March? (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance.). Input the amount as a positive value.)

A mortgage bond issued by Automation Engineering is for sale for $8,000. The bond has a face value of $10,000 with a coupon rate of 9% per year, payable quarterly. What rate of return will be realized if the purchaser holds the bond to maturity 5 years from now?

A $10,000 bond that matures in 20 years with interest at 8% per year payable quarterly was issued 4 years ago. If the bond is purchased now for $10,000 and held to maturity, what will be the effective rate of return per quarter to the purchaser?

A 10-year, 11.00%, $5,000 bond that pays dividends quarterly can be purchased for $4,551.

This means that $4,551 is spent on the bond now. Every quarter, $137.50 is provided to the purchaser as the dividend.
After 10 years, $5,000 is given to the purchaser.

If the bond is purchased and pays as scheduled, which of the following ranges of effective rate of return will the purchaser receive?

What are the key factors influencing consumer behavior in the e-commerce industry, and how do they contribute to the success of online businesses?"

You want to test the claim that, on average, it takes more than 6060 minutes for the caffeine in a cup of coffee to take effect on the body. So you take a random sample of 25 people and record the time, in minutes, that it takes for the amount of caffeine in a cup of coffee to have a physiological effect on each person. Does the sample provide sufficient evidence to support your claim at the 0.01 level of significance? (You have good reason to believe that, for a substance like caffeine, the population standard deviation is approximately 6 minutes.)

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1. What are the null and alternative hypotheses?
   H0�0:  Select an answer   n   s   μ   x̄   σ  Correct  ?   ≠   >   =   ≤   <   ≥  Correct Correct
   Ha��:  Select an answer   x̄   s   μ   n   σ  Correct  ?   ≥   <   ≠   ≤   =   >  Correct Correct
   
   
2. What type of tailed test should we run?  Select an answer   left-tailed   right-tailed   two-tailed  Correct
   
   
3. What type of test should we run in terms of the distribution?  Select an answer   F-test   p-test   t-test   z-test  Correct
   
   
4. Enter in your critical value(s) rounded to four decimal places. If there is more than one critical value, enter them separated by a comma.
   Correct2.3263
   
   
5. The rejection region consists of all  Select an answer   z-values   p-values   F-values   t-values   that are  Select an answer   less than or equal to   greater than or equal to   outside of   . (If you chose the outside of option, enter in the two values separated by a comma.)
   
   
6. The sample mean ¯x=�¯= minutes. (rounded to four decimal places)
   The test statistic is . (rounded to four decimal places)
   
   
7. The correct decision is to  Select an answer   Fail to reject the null hypothesis H_0.   Reject the null hypothesis H_0.   .
   
   
8. At the given significance level, the correct conclusion is:
   • At the 0.010.01 significance level, the sample data does not provide sufficient evidence to support the claim that on average, at the population level, it takes more than 6060 minutes for the caffeine in a cup of coffee to take effect on the body.
   • At the 0.010.01 significance level, the sample data provides sufficient evidence to support the claim that on average, at the population level, it takes more than 6060 minutes for the caffeine in a cup of coffee to take effect on the body.
   
   
   
9. Given your decision above, you run the risk of having made a  Select an answer   Type II error   Type I error   .

A 26.0-g piece of aluminum (which has a molar heat capacity of 24.03 J/mol°C) is heated to 85.8°C and dropped into a calorimeter containing water (the specific heat capacity of water is 4.18 J/g°C) initially at 22.2°C. The final temperature of the water is 27.0°C. Calculate the mass of water in the calorimeter. You may assume that no heat is lost to the surroundings.

A 23.4-g piece of aluminum (which has a molar heat capacity of 24.03 J/mol°C) is heated to 85.4°C and dropped into a calorimeter containing water (the specific heat capacity of water is 4.18 J/g°C) initially at 21.9°C. The final temperature of the water is 27.6°C. Calculate the mass of water in the calorimeter.

A 71.9 g piece of aluminum ( which has a molar heat capacity of 24.03 J/C (mol)) is heated to 618 C and dropped into a calorimeter containing water ( specific heat capacity of water is 4.18 J/gC) initially at 22.3 C. The final temperature of the water is 102.2 C. Ignoring significant figures, calculate the mass of water in the calorimeter. (please show all work)

A 42.10 g piece of copper (molar heat capacity of 24.47 J/C*mol) is heated to 78.0 deg. C and dropped into a calorimetercontaining water (specific heat capacity 4.18 J/ g C) initially at20.2deg C. The final temperature of the water is 33.7 deg C.Caluclate the mass of water in the calorimeter.

A 35.16 g piece of copper (which has a molar heat capacity of 24.47 j/c mol) is heated to 80.8 degrees celcius and dropped into a calorimeter containing water (specific heat capacity of water is 4.18 J/g C) initially at 21.5 C. The final temp of the water is 27.1 degrees celcius. Calculate the mass of water in the calorimeter.

A coffee calorimeter, Ccal 1.6939E3 JC-1 contains 40.7 mL if water at a temperature of 18.3 degrees celcius. An unknown metal with a mass of 54.56 g is heated to 72.5 degrees celcius then added to the calorimeter. Th final temperature of the calorimeter is 26.0 degrees celcius. What is the specific heat capacity of the unknown metal? The specific heat capacity of water is 4.184J g

If you mix 200 mL of water at 70 degrees celcius with 300mL of water at 20 degrees celcius, what is the final temperature of the mixture? Assume perfect heat transfer and no losses. Note density of water is 1.0 g/mL and specific heat capacity is 1.0 cal/gxK

Answer should be 40 degrees celcius

The Kw =1.0*10^-14 at 25 degrees celcius/ What is the Kw at -10.0 degrees celcius? what is the pH of a neutral solution at -10 degrees celcius? The heat of reaction for the ionization of water is 57.106 KJ/mol. Please help!!!

what is the meaning and value of Kw at 25 degrees C?

1. What is the meaning of neaple

Question from conic section...

Find the centre and radius of the circle:-

* 2x sq.+2y sq.-x=0

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