Consider the following information:State of EconomyBoomGoodPoorBustExpected returnProbability of Stateof EconomyVariance20.05Standard deviation2055What is the variance of this portfolio?14.30%17.80%10.90%21.00%28.30%0.02620.6262Your portfolio is invested 26 percent each in A and C, and 48 percent in B. What is theexpected return of the portfolio?(0.7738)1.22622.3262What is the standard deviation?16.18%18.38%13.88%12.8Rate of Return if State OccursStock A Stock B Stock C.46.1720.58%.3620-.04-.14-.07-.3226.11-.06-.09

Expected value :The expected value of a random variable can be intuitively understood as the average…

Answered: Consider the following information:…

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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The lifespan of a laptop battery normally distributedIf the mean lifespan of a battery 4 years with a standard deviation of 1.6 yearswhat is the probability that the next laptop battery you purchase will last between 3.5 and years? 44.81%; 84.79% 15.21% 55.19\%
Sales delay is the elapsed time between the manufacture of a product and its sale. According an article it is quite common for investigators to model sales delay using a lognormal distribution. For a particular product, the cited article proposes this distribution with parameter values μ = 2.02 and o2 = 0.05 (here the unit for delay is months). USE SALT (a) What are the variance and standard deviation of delay time? (Round your answers to two decimal places.) months2 variance 3.06 standard deviation 1.75 ✔ months (b) What is the probability that delay time exceeds 12 months? (Round your answer to four decimal places.) 0.0188 (c) What is the probability that delay time is within one standard deviation of its mean value? (Round your answer to four decimal places.) 0.1024 x (d) What is the median of the delay time distribution? (Round your answer to two decimal places.) 7.54 months (e) What is the 99th percentile of the delay time distribution? (Round your answer to two decimal places.)…
Sales delay is the elapsed time between the manufacture of a product and its sale. According an article it is quite common for investigators to model sales delay using a lognormal distribution. For a particular product, the cited article proposes this distribution with parameter values μ = 2.08 and o² = 0.03 (here the unit for delay is months). USE SALT (a) What are the variance and standard deviation of delay time? (Round your answers to two decimal places.) 2.01 1.42 ✓ months² months variance standard deviation (b) What is the probability that delay time exceeds 12 months? (Round your answer to four decimal places.) 0096 (c) What is the probability that delay time is within one standard deviation of its mean value? (Round your answer to four decimal places.) 0.8485 X (d) What is the median of the delay time distribution? (Round your answer to two decimal places.) 8.00 months (e) What is the 99th percentile of the delay time distribution? (Round your answer to two decimal places.)…
How do I solve part C to find the middle 10% of college graduates' loan debt lies between what two numbers?
Replacement times for TV sets are normally distributed with a mean of 8.2 years and a standard deviation of 1.1 years (Consumer Reports). If you want to provide a warranty so that only 1% of the TV sets will be replaced before the warranty expires, what is the time length of the warranty? (Answer rounded to the hundredths place).
K An oceanographer claims that the mean dive duration of a North Atlantic right whale is 11.5 minutes. A random sample of 35 dive durations has a mean of 12.4 minutes and a standard deviation of 2.1 minutes. At a = 0.01 is there enough evidence to reject the oceanographer's claim? Complete parts (a) through (d) below. Assume the population is normally distributed. (a) Identify the claim and state Ho and Ha. Ho: Ha: (Type integers or decimals. Do not round.) The claim is the hypothesis. (b) Use technology to find the P-value. Find the standardized test statistic, t. t= (Round to two decimal places as needed.) Obtain the P-value. ... P= (Round to three decimal places as needed.) (c) Decide whether to reject or fail to reject the null hypothesis. 11 Laung the P-value greater than α. OC €
Calculation of Quartile Deviation-Individual Observation Series EXAMPLE 5. Calculate Quartile Deviation and its Coefficjent. Months: Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Sales : 55 60 70 90 90 110 120 130 145 145 155 170
The prices paid for a model of a new car are approximately normally distributed with a mean of $17,000 and a standard deviation of $500. The price that is 3 standard deviations above the mean is $_____ . The price that is 2 standard deviations below the mean is $_____ . The percentage of buyers who paid between $16,500 and $17,500 is _____% The percentage of buyers who paid between $17,000 and $18,000 is _____%. The percentage of buyers who paid less than $16,000 is _____%.
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3 P(z < + 3. Ambulance response times average 7.5 minutes with a standard deviation of 2.5. What is the probability that an ambulance will respond within 6 to 8 minutes. PC Finish attempt DELL $ 4. & 7 8 e y %#3m
Test a claim that the mean amount of carbon monoxide in the air in U.S. cities is less than 2.33 parts per million. It was found that the mean amount of carbon monoxide in the air for the random sample of 65 cities is 2.38 parts per million and the standard deviation is 2.11 parts per million. At a = 0.10, can the claim be supported? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Identify the claim and state H, and Ha. Which of the following correctly states Ho and H, ? Họ: 2.33 Hạ: 2.33 (Type integers or decimals. Do not round.) The claim is the alternative hypothesis. (b) Use technology to find the critical value(s) and identify the rejection region(s). The critical value(s) is/are to %3D (Use a comma to separate answers as needed. Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer. 4 parts remaining Clear All Check Answer
Test a claim that the mean amount of carbon monoxide in the air in U.S. cities is less than 2.32 parts per million. It was found that the mean amount of carbon monoxide in the air for the random sample of 62 cities is 2.38 parts per million and the standard deviation is 2.11 parts per million. At a= 0.10, can the claim be supported? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Identify the claim and state H, and H. Which of the following correctly states H, and H,? Ho (Type integers or decimals. Do not round.) The claim is the V hypothesis. Enter your answer in the edit fields and then click Check Answer. рarts remaining Clear All Check Answer P Type here to search a 1:01 AM E99+ (? 2/21/2021 insert prt sc elete 144 esc 4. & 7. @ $ 4 23 + backspace home 3 8. W R T Y. tab enter

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