Find the mean and standard deviation for each of the sample data sets. The grade-level reading scores from a reading test given to a random sample of 12 students in an urban high school graduating class are:

$$\begin{matrix} \text{9} & \text{11} & \text{11} & \text{15}\\ \text{10} & \text{12} & \text{12} & \text{13}\\ \text{8} & \text{7} & \text{13} & \text{12}\\ \end{matrix}$$

Find the mean and standard deviation for each of the sample data sets. The reaction times (in minutes) of a drug given to a random sample of 12 patients are:

$$\begin{matrix} \text{} & \text{}\\ \text{4.9} & \text{5.1} & \text{3.9} & \text{4.2}\\ \text{6.4} & \text{3.4} & \text{5.8} & \text{6.1}\\ \text{5.0} & \text{5.6} & \text{5.8} & \text{4.6}\\ \end{matrix}$$

Find $(\mathbf{w})_{B}$ and $[\mathbf{w}]_{B}$ with respect to the basis $B=\left\{\mathbf{v}_{1}, \mathbf{v}_{2}\right\}$ for $R^{2}$. (a) $\mathbf{w}=(3,-7) ; \mathbf{v}_{1}=(1,0), \quad \mathbf{v}_{2}=(0,1)$ (b) $\mathbf{w}=(1,1) ; \mathbf{v}_{1}=(2,-4), \mathbf{v}_{2}=(3,8)$.

Write True or False on the line provided. The first eukaryotes were Archaea.

evaluate (if possible) the sine, cosine, and tangent at the real number. t = - 4π/3

What regional foods did lab teams choose? How were they used in different recipes?

Which of the following substances is released in the body to cause most of the symptoms of allergies? A. insulin, B. allergens, C. histamine, D. acetylcholine.

Cardinal Company is considering a five-year project that would require a $2,975,000 investment in equipment with a useful life of five years and no salvage value. The company's discount rate is 14$

$$\begin{matrix} \text{Sales} & \text{ } & \text{\$ 2.735.000}\\ \text{Variable expenses} & \text{ } & \text{1.000.000}\\ \text{Contribution margin} & \text{ } & \text{1.735.000}\\ \text{Fixed expenses:}\\ \text{Advertising, salaries, and other fixed out-of-pocket costs} & \text{\$ 735.000}\\ \text{Depreciation} & \text{595.000}\\ \text{Total fixed expenses} & \text{ } & \text{1.330.000}\\ \text{Net operating income} & \text{ } & \text{\$ 405.000}\\ \end{matrix}$$

$ (Answer each question by refereeing to the original data unless instructed otherwise.) 1. Which item(s) in the income statement shown above will not affect cash flows? 2. What rule the project's arnrnal net cash inflows? Using the correct discount factor from Exhibit 8B- 2 in Appendix 8B, what is the present

What did Rutherford discover about the structure of an atom?

Find the mean and standard deviation for each of the sample data sets. The earnings per share (in dollars) for 12 companies selected at random from the list of Fortune 500 companies are:

$$\begin{matrix} \text{2.35} & \text{1.42} & \text{8.05} & \text{6.71}\\ \text{3.11} & \text{2.56} & \text{0.72} & \text{4.17}\\ \text{5.33} & \text{7.74} & \text{3.88} & \text{6.21}\\ \end{matrix}$$

Find the mean and standard deviation for each of the sample data sets. The price-earnings ratios of 100 randomly selected stocks from the New York Stock Exchange are:

$$\begin{matrix} \text{Interval } & \text{Frequency}\\ \text{-0.5-4.5 } & \text{5}\\ \text{4.5-9.5 } & \text{54}\\ \text{9.5-14.5} & \text{25}\\ \text{14.5-19.5 } & \text{13}\\ \text{19.5-24.5 } & \text{0}\\ \text{24.5-29.5 } & \text{1}\\ \text{29.5-34.5 } & \text{2}\\ \end{matrix}$$

Describe the two membranes that make up an amoeba and suggest why it is beneficial for the amoeba to have two membranes.

E-Loan, an online lending service, offers a 36-month auto loan at 7.56% compounded monthly to applicants with good credit ratings. If you have a good credit rating and can afford monthly payments of $350, how much can you borrow from E-Loan? What is the total interest you will pay for this loan?

Write True if the statement is true. If the statement is false, change the underlined word or words to make the statement true. ____ Cardiac muscle is under voluntary control.