Math Answers

An electromotive force 120, 0<t<20, E(t) = (o, t >20, is applied to an LR-series circuit in which the inductance is 20 henries and the resistance is 2 ohms. Find the current it) if i(0)-0.

What will be the price of the same share stated earlier if the growth rate is 0% and the required return is 16%?

Getting acquainted with the essential terms and concepts on testing the difference between two dependent sample means, it is now time for you to explain thoroughly your answers to the following questions.

1. Explain the role of the following statistical terms in testing the difference of two dependent samples.

a. Hypotheses (Null and Alternative Hypotheses)

b. Test of significance (One Tailed Test and Two Tailed Test)

c. Level of significance

d. Critical region

e. Critical value

f. Test value

A random variable of size 30 bin(20,0.6) ie binomial distribution.Find (x<12.2) (x>12.2(

Can You Show Me the Way? Complete the table of values of the exponential function. Then, draw its graph in the given coordinate plane. 2 3 1 х -3 -2 -1 0 f(x) = 3*1. How will you describe the graph? 2. In which quadrant/s do the graph occupies?3. What are the other possible values of x? Describe the range of the possible values of x? 4.What do you think now is the range of the function? 5. What other observations can you give?

The packaging on an electric light bulb states that the average length of life of bulbs is 1000 hours. A consumer association thinks that this is an overestimate and tests a random sample of 64 bulbs, recording the life x

 hours, of each bulb. The results are summarised as follows:

∑x=63910.4,∑x2=63824061

A significance test, at the 10% level, is done to test where the statement on the packaging in overestimating the length of life of this type of light bulb. What is the null and alternative hypothesis for this test?

Solve the following differential equation:

1. (D²+D)y=sin x

2. (D²+4D+5) y= 50x + 13e^3x

3. (D³+D²-4D-4)y= 4 sin x

4.(D³-D)y=x

5. (D²-4D+4)y=e^x

The packaging on an electric light bulb states that the average length of life of bulbs is 1000 hours. A consumer association thinks that this is an overestimate and tests a random sample of 64 bulbs, recording the life x

 hours, of each bulb. The results are summarised as follows:

∑x=63910.4,∑x2=63824061

Find the sample mean x.

The packaging on an electric light bulb states that the average length of life of bulbs is 1000 hours. A consumer association thinks that this is an overestimate and tests a random sample of 64 bulbs, recording the life x

 hours, of each bulb. The results are summarised as follows:

∑x=63910.4,∑x2=63824061

Calculate an unbiased estimate for the standard deviation of the length of life of all light bulbs of this type.

If x and y are not both even numbers, then neither the square of x and y is odd, nor the cube of x and y is even