<PrevA conservative investor would like to invest some money in a bond fund. The investor is concerned about the safety of her principal (the originalmoney invested). Colonial Funds claims to have a bond fund which has maintained a consistent share price of $11. They claim that this share pricehas not varied by more than $0.3 on average since its inception. To test this claim, the investor randomly selects 21 days during the last year anddetermines the share price for the bond fund. The average share price of the sample is $10 with a standard deviation of $0.4. Assuming that theshare prices of the bond fund have an approximately normal distribution, construct an 80 % confidence interval for the standard deviation of theshare price of the bond fund. Round any intermediate calculations to no less than six decimal places and round the endpoints of the interval to fourdecimal places.AnswerLower EndpointUpper EndpointTablesKeypadKeyboard ShortcutsN

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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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1. Calculate the ROI of an investment that you purchased at $5,300 and sold at $7,200. Round to the nearest hundredths. 2. What is the ROI of your mutual funds that you buy at $35,900 and sell at $42,900? Round to the nearest hundredths. 3. You purchase 12 shares of Nike Inc. stock at $112.40 You sell all the shares at $133.62, what is your ROI? Round to the nearest hundredths.
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A paper included analysis of data from a national sample of 1,000 Americans. One question on the survey is given below. "You owe $3,000 on your credit card. You pay a minimum payment of $30 each month. At an Annual Percentage Rate of 12% (or 1% per month), how many years would it take to eliminate your credit card debt if you made no additional charges?" Answer options for this question were: (a) less than 5 years; (b) between 5 and 10 years; (c) between 10 and 15 years; (d) never-you will continue to be in debt; (e) don't know; and (f) prefer not to answer. A USE SALT (a) Only 355 of the 1,000 respondents chose the correct answer of "never." Assume that the sample is representative of adult Americans. Is there convincing evidence that the proportion of adult Americans who can answer this question correctly is less than 0.40 (40%)? Use the five-step process for hypothesis testing (HMC3) described in this section and a = 0.05 to test the appropriate hypotheses. (Hint: See Example…
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A paper included analysis of data from a national sample of 1,000 Americans. One question on the survey is given below. "You owe $3,000 on your credit card. You pay a minimum payment of $30 each month. At an Annual Percentage Rate of 12% (or 1% per month), how many years would it take to eliminate your credit card debt if you made no additional charges?" Answer options for this question were: (a) less than 5 years; (b) between 5 and 10 years; (c) between 10 and 15 years; (d) never—you will continue to be in debt; (e) don't know; and (f) prefer not to answer. The paper also reported that 37.1% of those in the sample chose one of the wrong answers (a, b, or c) as their response to this question. Is it reasonable to conclude that more than one-third of adult Americans would select a wrong answer to this question? Use ? = 0.05. (Round your test statistic to two decimal places and your P-value to four decimal places.) State the appropriate null and alternative hypotheses. H0: p =…

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