PrevThe Azure Travel Company; the larger standard deviation indicates that The Azure Travel Company has less variability in its closing prices than ElOLobo Malo Incorporated.OThe Azure Travel Company; the larger standard deviation Indicates that The Azure Travel Company has a greater mean closing price than El LoboMalo Incorporated.OEl Lobo Malo Incorporated; the smaller standard deviation indicates that El Lobo Malo Incorporated has a greater mean closing price than TheAzure Travel Company.El Lobo Malo Incorporated; the smaller standard deviation Indicates that El Lobo Malo Incorporated has less variability in its closing prices than TheOAzure Travel Company.>Next Donna is looking into investing a portion of her recent bonus into the stock market. While researching different companies, she discovers thefollowing standard deviations of one year of daily stock closing prices.El Lobo Malo Incorporated: Standard deviation of stock prices = $1.17The Azure Travel Company: Standard deviation of stock prices = $9.73Based on the data and assuming these trends continue, which company would give Donna a stable long-term investment?

Answered: Image /qna-images/answer/cc6679bb-1b69-42c2-b04f-e7b29a8621f5.jpg

Answered: Donna is looking into investing a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Dan Conway invested his life savings in cryptocurrencies in 2016. Since then, that investment has earned an average return of 10.51%. What is the range of Dan Conway’s returns with a 68% probability, if his investment exhibits a standard deviation of 19.32%? a. −28.13% to 49.15% b. −18.47% to 39.49% c. −8.81% to 12.21% d. −8.81% to 29.83% e. −47.45% to 68.47%
From generation to generation, the mean age when smokers first start to smoke varies. However, the standard deviation of that age remains constant at around 2.1 years. A survey of 41 smokers of this generation was done to see if the mean starting age is at least 19. The sample mean was 18.2 with a sample standard deviation of 1.3. Do the data support the claim at the 5% level? Note: If you are using a Student's t-distribution for the problem, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) Part 1) Sketch a picture of this situation. Label and scale the horizontal axis and shade the region(s) corresponding to the p-value Part 2) Alpha (Enter an exact number as an integer, fraction, or decimal.)α = Part 3) Construct a 95% confidence interval for the true mean. Sketch the graph of the situation. Label the point estimate and the lower and upper bounds of the confidence interval. (Round your lower and upper…
From generation to generation, the mean age when smokers first start to smoke varies. However, the standard deviation of that age remains constant at around 2.1 years. A survey of 42 smokers of this generation was done to see if the mean starting age is at least 19. The sample mean was 18.1 with a sample standard deviation of 1.3. Do the data support the claim at the 5% level?Note: If you are using a Student's t-distribution for the problem, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) State the distribution to use for the test. (Round your answers to four decimal places.) X ~ , What is the test statistic? (If using the z distribution round your answers to two decimal places, and if using the t distribution round your answers to three decimal places.) = What is the p-value? (Round your answer to four decimal places.)
According to the Air Transport Association of America, the average operating cost of an MD-80 jet airliner is $2,087 per hour. Suppose the operating costs of an MD-80 jet airliner are normally distributed with a standard deviation of $173 per hour.(Round the value of z to 2 decimal places. Round your answers to 2 decimal places.) (a) At what operating cost would only 23% of the operating costs be less?$enter the dollar amount at which only 23% of the operating costs would be less (b) At what operating cost would 65% of the operating costs be more?$enter the dollar amount at which 65% of the operating costs would be more (c) What operating cost would be more than 85% of operating costs?$enter the dollar amount that would be more than 85% of operating costs
The monthly closing stock prices (rounded to the nearest dollar) for Panera Bread Co. for the first six months of 2010 are reported in the following table. [You may find it useful to reference the t table.] Months Closing Stock Price January February 6 March 9 April May 8 10 June 4 Source: http://finance.yahoo.com. a. Calculate the sample mean and the sample standard deviation. (Round intermediate calculations to at least 4 decimal places and "Sample mean" and "Sample standard deviation" to 2 decimal places.) Sample me Sample standard deviation b. Calculate the 90% confidence interval for the mean stock price of Panera Bread Co., assuming that the stock price is normally distributed. (Round "t" value to 3 decimal places and final answers to 2 decimal places.) Confidence interval to
The Credit Risk Department of a major bank estimates the default rate on loans under $10,000 to be 4%. The bank will make 2400 loans that are under $10,000 next month. Answer the following. (If necessary, consult a list of formulas.) (a) Find the mean of p, where p is the proportion of defaults on the 2400 loans under $10,000 to be made next month. (b) Find the standard deviation of p. (c) Compute an approximation for P(p 2 0.03), which is the probability that 3% or more of next month's loans under $10,000 will be defaulted on. Round your answer to four decimal places.
A queueing system has an arrival rate of 37 visitors per day (standard deviation of 32) and a service rate of 42 visitors per day (standard deviation of 25). (Round your answer to three decimal places.) What is the coefficient of variation of the arrival rate?
#2) A large warehouse installed a security system a few years ago. Under an older system the managers estimated that they were losing an average of $678 worth of goods to thieves each week. A random sample of 36 weekly records under the current system showed that they were still losing an average of $650 worth of goods each week. The sample standard deviation was s = $93. Does this indicate that the average loss is different (either more or less) than the previous $678 per week? Use a 5% level of significance.
Colonial Funds claims to have a bond fund which has maintained a mean share price of $14.00. They claim that the variance of the share price is 0.18. To test this claim, the investor randomly selects 12 days during the last year. He finds an average share price of $13.80 with a standard deviation of 0.3905. Can the investor conclude that the share price of the bond fund varies from Colonial Funds claims at a = 0.05? Step 1 of 5: State the hypotheses in terms of the standard deviation, Round the standard deviation to four decimal places when necessary. Answer Ho: Ha Tables Keypad Keyboard Shortcuts
The following data show the interest rates on 4 randomly chosen personal loans (in percents): 6.9, 4.9, 9.4, 6.7. Calculate the standard deviation of the sample of interest rates. (please express your answer using 2 decimal places)
Directions: Compute the total returns, the average of returns, and the standard deviation of the following stocks: 1) 2) EGRH Inc. DMP, Ltd. STOCK RETURN YEA AVERAGE OF RETURNS (x) YEAR STOCK RETURN PRICE AVERAGE OF RETURNS (x) PRICE (x₁) Jan-2021 P8.30 Feb-2021 P8.60 Jan-2021 PO. Feb-2021 PO.090 Mar-2021 P0.097 Apr-2021 PO.189 May-2021 PO.164 Mar-2021 P9.14 Apr-2021 P13.30 May-2021 P13.74 Jun-2021 P14.80 Jul-2021 P16.94 Jun-2021 P0.495 Jul-2021 PO.28 Aug-2021 PO Sep-2021 90 Aug-2021 P13.70 Sep-2021 P14.88 Oct-2021 0.375 Oct-2021 P15.30 Nov-20 PO.325 Nov-2021 P14.30 Dec-2 PO.330 Dec-2021 P15.52 3) SD (8) GSM Inc. STOCK YEAR PRICE Jan-2021 P57.70 Feb-2021 P52.90 Mar-2021 P50.95 Apr-2021 P58.25 May-2021 P74.05 Jun-2021 P94.75 Jul-2021 P85.00 Aug-2021 P105.00 Sep-2021 P114.00 Oct-2021 | P101.00 Nov-2021 P100.40 Dec-2021 P113.80 SD (8) = RETURN (x₁) -x)² AVERAGE OF RETURNS (x-x)² (x) SD (8) = ACEE, Inc. YEAR STOCK RETURN PRICE (x₁) Jan-2021 P13.56 Feb-2021 P20.80 Mar-2021 P22.50 Apr-2021…
The reading speed of second grade students in a large city is approximately normal, with a mean of 91words per minute (wpm) and a standard deviation of 10 wpm. Complete parts (a) through (f).

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