In a scientific study that attempts to relate the biodiversity of macro invertebrates to the acidity of the water near mines, samples of macro invertebrates were taken at the rate of a monthly sample for 12 months in two different locations. For the first locality, an average biodiversity index of 3.11 and a sample standard deviation of 0.771 were obtained. For the second locality the average biodiversity index was 2.04 with a standard deviation of 0.448.

a) BUILD and INTERPRET a 90% confidence interval for the difference in the means of the two localities assuming that the populations fit approximately a normal population and that the variances can be considered equal.

b) Evaluate whether the evidence supports the presumption of equal variances.

c) Would it have been better to use a 95% interval? Explain in detail.

` There are children in your class who complain about problems they are having with their sense of sound
perception. Having gained knowledge about this area of study, classify and explain the problem of these
group of children based on the site of laceration.

Thermal energy ~ kT , where T is the absolute temperature (Kelvin) and k is Boltzmann's constant is an important benchmark... it is the energy available to electrons from their surroundings by virtue of random thermal motion.

The value of kT at room temperature is 0.026 eV or 26 meV.

What is the size, L, of the 3-D "box" in nanometers (a cube of side L) such that the energy difference between the ground state (1,1,1) and the first excited state (1,1,2) is about kT at room temperature?

Where would cash collected from customers appear on the statement of cash flows?

1. Operating section
2. Investing section
3. Financing section
4. Supplemental schedule

Where would the redemption of bonds payable appear on the statement of cash flows?

1. Operating section
2. Investing section
3. Financing section
4. Supplemental schedule

Where would the purchase of available for sale securities appear on the statement of cash flows?

1. Operating section
2. Investing section
3. Financing section
4. Supplemental schedule

Statistics exercise

One-way BG ANOVA

    Suppose you would like to know if political party affiliation (democrat, republican, libertarian) has an effect on how people feel about the war in Afghanistan. You ask people to rate on a scale from 1-100 how much they support the war effort. Use the data below to see if the groups differed.

1. State the hypotheses

2. Select an alpha level and one- or two-tailed

3. Select and compute the appropriate statistic.

4. Report your findings in APA style

5. Accept or reject the null and draw an inference if one is warranted.

396 v, 60 Hz, 600 hp, 0.6 pf-leading, four-pole triangle connected synchronous motor has 0.9Ω synchronous reactance. Friction; wind; core losses and armature resistance are neglected. a) If the motor is operating under magnitude of phase current (ia) 216 Ampere and power factor of 0.6 lagging, 1. Find the input power of motor in hp ( 2. Find the generated voltage, EA 3. Find the torque and the maximum inducible torque in current state. b) If EA is increased by 18% find, 1. Magnitude of new armature current (ia), ( 2. New power factor of motor. (Please use at least 4 digits after decimal point in your calculations. Otherwise, there may be problems about exact answers.)

For each of the items listed below, indicate in what section of the income statement or retained earnings statement these items should be classified. Use the following letter code for your selections:

1. Reported as an Ordinary or unusual gain (loss) item on the income statement as part of Income from Continunigng operations.
2. The item is classified as a Change in Accounting Estimate and is reported as part of continuing operations on the income statement
3. The item is classified as Discontinued operations and is reported on the income statement net of related taxes.
4. The items is classified as a Change in Accounting Principle and is reported on the retained earnings statement.
5. The item is classified as a Correction of an Error and as a Prior period adjustment on the retained earnings statement.
6. The item is classified as Other comprehensive income and is reported on the comprehensive income statement.

-------A. The company reported unrealized gain from investment classified as Available for Sale.

____     B.     In computing the depreciation in 2013 for equipment, an error was made which overstated income in that year $75,000. The error was discovered in 2015.

____    C.     In 2015, the company changed its method of accounting for its inventory from FIFO to average cost.

__------ D.Loss on the disposal of a separate line of the business.

______     E.     The company neglected to record its correct ending inventory in the previous year.

______     F.     The company has suffered a loss from a flood.

______    G.     The usefull life of a depreciable asset was changed , thus decreasing depreciation expense.

______    H.     Discontinuance of all production in New Jersey. The manufacturing operations were relocated to New Mexico.

what are:
bus extensions?
bus bar?
bus raiser?
bus section?

What are benefits of section 504 plan? Please provide a reliable source.