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English- and isiXhosa-speaking children identified as having similar numerical abilities are assessed using an English and isiXhosa version of the Mathematical Aptitude Test respectively. If the two language versions of the test are equivalent it means that … isiXhosa speakers will obtain similar scores on both language versions of the test. the test scores of individuals from the two groups cannot be directly compared. the two groups will obtain similar scores on their respective versions. no items were modified during the translation.

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Masterson, Inc., has 5 million shares of common stock outstanding. The current share price is $71, and the book value per share is $10. The company also has two bond issues outstanding. The first bond issue has a face value of $80 million, has a coupon rate of 4 percent, and sells for 96 percent of par. The second issue has a face value of $65 million, has a coupon rate of 3 percent, and sells for 108 percent of par. The first issue matures in 20 years, the second in 9 years. Suppose the most recent dividend was $4.35 and the dividend growth rate is 4.6 percent. Assume that the overall cost of debt is the weighted average of that implied by the two outstanding debt issues. Both bonds make semiannual payments. The tax rate is 22 percent. What is the company's WACC? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)

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1. Using the Dornbusch model, consider an economy with a flexible exchange rate that intends to conduct contractionary monetary policy. (a) Using appropriately labelled diagrams, describe the effects on impact and during the adjustment phase of a monetary contraction on the exchange rate, prices, the interest rate and output. Describe the intuition behind each of your answers with particular attention to both the short-run effects and the adjustment process.

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12 0.5 points Phonological development has no effect on the production of first words. True False

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a population has a mean=158 and a standard deviation=22. Find the mean and standard deviation of the sampling distribution sample means with sample size n=56

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With $x$ representing the water temperature in degrees Celsius, $S(x) = -x^3 - 9x^2 + 165x + 1300$, $5 \le x \le 20$ is an approximation to the number of salmon swimming upstream to spawn. Find the temperature that produces the maximum number of salmon.

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Question 6 (15 points) Consider the following representation of binary trees: an empty tree is represented as an empty tuple ({} in Picat and () in Haskell), and a binary tree node is represented as a three-element tuple, where the first element is the node value, the second element is the left child, and the third element is the right child. Write the following functions on binary trees. 1. member(x, btree): This function checks if x occurs in btree. The binary tree btree is not necessarily a binary search tree. 2. one_child_node_values(btree): This function takes a binary tree and returns a list of values of the nodes in the tree that have exactly one child. The order of the values in the list is not important. 3. equal(t1, t2): tests if tree t1 and tree t2 are equal. Two binary trees are equal if (1) both are empty; or (2) the roots have the same value, the two left subtrees are equal, and the two right subtrees are equal. 4. shallowest_leaf(btree) (extra 5 points): This function returns the values in a shal- lowest leaf node in btree. If there are multiple such leaves, then the function returns the left-most one.

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33. Layne Corporation had the following information in its nancial st years ended 2014 and 2015: Cash dividends for the year 2015 $ 10,000 Net income for the year ended 2015 83,000 Market price of stock, 12/31/14 10 Market price of stock, 12/31/15 12 Common stockholders' equity, 12/31/14 1,600,000 Common stockholders' equity, 12/31/15 1,785,600 Outstanding shares, 12/31/15 180,000 Preferred dividends for the year ended 2015 15,000 What is the book value per share for Layne Corporation for the year ended 2015? a. $11.00 b. $9.92 c. $9.94 d. $8.89

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Explain innovations in the Search engine such as Google & Yahoo systems which utilize Data Science and Machine Learning: Explain innovations in the e-commerce systems (such as Noon.com) which utilize Data Science and Machine Learning: Explain innovations in the Weather forecasting systems which utilize Data Science and Machine Learning: Explain innovations in the Self-Driving Car systems which utilize Data Science and Machine Learning: Explain innovations in the Recognition of Coronavirus Patient systems which utilize Data Science and Machine Learning: - Define Innovation description: - Which Data science/Machine Learning technique used Classification or Regression:

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2. Let $x$ and $y$ be real numbers be such $x, y \in \{\frac{\pi}{6}, \frac{\pi}{4}, \frac{\pi}{3}, \frac{\pi}{2}, \frac{2\pi}{3}, \pi\}$. (a) If $\int_0^x 4\cos^4(2t)dt = \frac{3\pi}{2}$, find $x$. Hint: Use the table below Let $f(x) = \frac{3}{2}x + \frac{1}{2}\sin(4x) + \frac{1}{16}\sin(8x) - \frac{3\pi}{2}$. $\begin{array}{|c|c|} \hline x & f(x) \\ \hline \frac{\pi}{6} & -3.5481 \\ \frac{\pi}{4} & -3.5343 \\ \frac{\pi}{3} & -3.5205 \\ \frac{\pi}{2} & -2.3562 \\ \frac{2\pi}{3} & 2.35619 \\ \pi & 0 \\ \hline \end{array}$

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