Which is the best investment company to invest in:Investment Company APossible ReturnProbability0.555 pesos45 pesos0.5Investment Company BPossible ReturnProbability0.560 pesos40 pesos0.5Investment Company CProbability0.3Possible Return0 pesos50 pesos100 pesos0.40.3Using the concept of mean, which of three best options has the best deal? Explain your answer.

It is known that, Mean= ΣXi*p(Xi) For company A we calculate expected possible return,…

Answered: Which is the best investment company to…

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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Graduation A private college report contains thesestatistics:70% of incoming freshmen attended public schools.75% of public school students who enroll as freshmeneventually graduate.90% of other freshmen eventually graduate.a) Is there any evidence that a freshman’s chances tograduate may depend upon what kind of high schoolthe student attended? Explain.b) What percent of freshmen eventually graduate?
Which of the following are ways that we can report our probabilities? O Proportion 7Neither answer is correct O Fraction OPercentage
13
We are interested in analyzing data related to college football. Use S to denote the team is in the SEC and use W to denote a team has a winning season. The probability that a team is in the SEC in the data set is 5.5%. The probability that a team has a winning season is 52.5%. The probability that a team is in the SEC and has a winning season is 3.55%. What percentage of teams are in the SEC or had a winning season? b. What percentage of people teams are in the SEC and did NOT have a winning season? Given a team had a winning season, what is the probability that they are in the SEC? а. с.
4.43 Consider the probability distribution for the random vari- able x shown here: 2 .4 10 .2 1 4 P(x) 2
Select the correct choice below and fill in the answer boxes to complete your choice (Type integers or decimals. Do not round.) A. One can be % confident that the mean drive-through service time of Taco Bell is between seconds and seconds. B. The mean drive-through service time of Taco Bell is of the time. OC. There is a seconds OD. One can be Taco Bell is % % probability that the mean drive-through service time of Taco Bell is between seconds and seconds % confident that the mean drive-through service time of seconds
Statistics and probability
Help please! As an advertising campaign, a company places tokens in some of their products with the promise that a token is worth a free vacation and all the products free for life. If the probability of finding a token is p, what is the mean and variance of the number of products you need to buy to find a token?
Given poll results from 1000 people of whom 14% indicated their favorite pie was chocolate, compare the width of a 95% confidence interval with the width of an 80% confidence interval. 1. What is the sample size n? 2. What is the sample proportion p-hat? 3. For the 95% confidence interval, a = 0.05; a/2=0.025. What is the critical value Z a/2 ? 4. Calculate the margin of error E. What is it? 5. p-hat plus or minus E gives us the confidence interval. What is it? How wide is it?
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Monthly telephone charges for cell phone in the United States are normally distributed with a mean of $62 for a single user. Coach Keefer thinks that leasing smart phones has increased the monthly cell phone bill for a single user. H: μ- 62 H : μ 62 O Ho : µ= 62 H : μ> 62 O Ho : µ= 62 H : μ 62 a O Ho : 62 Ha : ữ + 62

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