Which histogram depicts a higher standard? deviation? 0 2 4 6 8 10 Frequency 40 44 48 52 56 60 A histogram has a horizontal axis labeled from 40 to 60 in increments of 4 and a vertical axis labeled “Frequency” from 0 to 10 in increments of 1. Ten vertical bars of class width 2 extend from the horizontal axis and have heights as follows: 40 to 42, 1; 42 to 44, 2; 44 to 46, 5; 46 to 48, 6; 48 to 50, 8; 50 to 52, 8; 52 to 54, 6; 54 to 56, 7; 56 to 58, 3; 58 to 60, 2. 0 2 4 6 8 10 Frequency 30 40 50 60 70 A histogram has a horizontal axis labeled from 30 to 70 plus in increments of 10 and a vertical axis labeled “Frequency” from 0 to 10 in increments of 1. Nine vertical bars of class width 5 extend from the horizontal axis and have heights as follows: 30 to 35, 2; 35 to 40, 2; 40 to 45, 2; 45 to 50, 6; 50 to 55, 9; 55 to 60, 7; 60 to 65, 5; 65 to 70, 4; 70 to 72, 3. ?(a) ?(b) Choose the correct answer below. A. Histogram a depicts the higher standard? deviation, because the bars are higher than the average bar in b. B. Histogram a depicts the higher standard? deviation, because the distribution has more dispersion. C. Histogram b depicts the higher standard? deviation, because the distribution has more dispersion. D. Histogram b depicts the higher standard? deviation, since it is more bell shaped.

Linear Regression and Correlation.

Compute the equation of the linear regression line in the form y = mx + b, where m is the slope and b is the intercept.

Use at least 3 decimal places. (Round if necessary)
y =_____ x + _____

Compute the correlation coeficient for this data set. Use at least 3 decimal places. (Round if necessary)
r= ____

Compute the P-value (Use H_A: slope ≠ 0 for the alternative hypothesis.)

Use at least 3 decimal places. (Round if necessary)
P-value = ____

At the alpha = 0.05 significance level, is the correlation significant?

• No
• Yes, significant correlation

QUESTION #4 /8 (2 marks each) Answer the following questions regarding Exchange-Traded Funds (ETFs), in your own words:

a. How are ETFs typically structured?

b. Please describe how an in-kind exchange works?

c. What are the risks related to the composition of an ETF?

d. Why is “securities lending” a risk for ETFs?

1.25 L of methane (CH_4​4​​) reacts with 1.65 L oxygen O_2​2​​(g) to produce 1.35 g of CO_2​2​​(g) (density of CH_4​4​​ = 0.656 g/L, density of O_2​2​​ = 1.43 g/L)

Using the following equation: CH_4​4​​(g) + 2O_2​2​​(g) → CO_2​2​​(g) + 2H_2​2​​O(l), determine the percent yield for the reaction.

2.When is Phi appropriate?

3.When Cramer’s V appropriate?

4.What values can phi take on?

Let  f(x) = x^4 - 4x^3 - 18 x^2  + 77  

a)   a) Find all critical values of the function.       [10]

b)   b) Find all intervals of increase and decrease.      [10]

      c) Find all relative extrema. Use the second derivative test.   

      Label each as a relative max. or a relative min.      [10]

d)   d) Find on what interval(s) the function is concave up and concave down.      [10]    

e)   e) Find all inflection point(s), if any, of the function.       [10]

P23.7  

(LO 2, 3, 4 ) (SCF—Direct and Indirect Methods from Comparative Financial Statements) Chapman Company, a major retailer of bicycles and accessories, operates several stores and is a publicly traded company. The comparative balance sheet and income statement for Chapman as of May 31, 2020, are as follows. The company is preparing its statement of cash flows.

The following is additional information concerning Chapman's transactions during the year ended May 31, 2020.

• 1.All sales during the year were made on account.
• 2.All merchandise was purchased on account, comprising the total accounts payable account.
• 3.Plant assets costing $98,000 were purchased by paying $28,000 in cash and issuing 7,000 shares of stock.
• 4.The “other expenses” are related to prepaid items.
• 5.All income taxes incurred during the year were paid during the year.
• 6.In order to supplement its cash, Chapman issued 2,000 shares of common stock at par value.
• 7.Cash dividends of $105,000 were declared and paid at the end of the fiscal year.

Instructions

a.  

Compare and contrast the direct method and the indirect method for reporting cash flows from operating activities.

c.  

Using the indirect method, calculate only the net cash flow from operating activities for Chapman Company for the year ended May 31, 2020.

Please help with A & C

9. The physician orders magnesium sulfate infusion 4-gram bolus over 30 minutes, then 2 gm per hour. The pharmacy sends up an IV bag of 1-liter Lactated Ringers with 40 mg magnesium sulfate for a secondary line. Describe the procedure for magnesium sulfate infusion. At what rate will the bolus be administered in mL/hr?

A single observation X from a normal population is used to test the null hypothesis H0:(μ=2,σ2=4) against H1:(μ=1,σ2=2).

Construct the most powerful critical region of size α=0.05 for this test.

find inverse laplace transform of F(s)= (2s³ +5s²+8s+22)/[(s²+4)(s²+3s+2)]