**Example 3: Probability Distribution of Cookie Purchases**Alexis is selling girl scout cookies. She has kept track of the number of boxes of cookies that her customers have purchased over the last 2 years. She wants to use this data to help predict how many boxes of cookies a new customer might purchase. The table below summarizes Alexis’ data, with the number of boxes that a customer might purchase along with the corresponding probability that they will purchase that number of boxes based on her previous sales. Use this information to answer the following questions.| Outcomes: | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 ||----------------------|------|------|------|------|------|------|------|------|------|| Probability: P(X = xi) | 0.21 | 0.16 | 0.32 | 0.11 | 0.08 | 0.05 | 0.04 | 0.02 | 0.01 |**Questions:**a) Construct a probability histogram of the data in the table above and comment on the shape.b) What is the probability that a randomly selected customer will purchase 3 boxes of cookies?c) What is the probability that a randomly selected customer will purchase at least 4 boxes of cookies?d) What is the probability that a randomly selected customer will purchase anywhere from 2 to 5 boxes of cookies?e) What is the probability that a randomly selected customer will purchase no more than 3 boxes of cookies?

(a) Use the Excel steps to construct the probability histogram of the data table as follows: Enter…

Answered: rample 3: Alexis is selling girl scout…

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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Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day. A sample of 71 stocks traded on the NYSE that day showed that 24 went up. You are conducting a study to see if the proportion of stocks that went up is is significantly more than 0.3. You use a significance level of a = 0.01. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... less than (or equal to) a greater than a This test statistic leads to a decision to... reject the null accept the null fail to…
Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day.A sample of 64 stocks traded on the NYSE that day showed that 24 went up.You are conducting a study to see if the proportion of stocks that went up is significantly more than 0.3. You use a significance level of α=0.01α=0.01.What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value = The p-value is... less than (or equal to) αα greater than αα This test statistic leads to a decision to... reject the null accept the null fail to…
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Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day. A sample of 51 stocks traded on the NYSE that day showed that 22 went up. You are conducting a study to see if the proportion of stocks that went up is significantly more than 0.3. You use a significance level of a =0.05. = What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... O less than (or equal to) a O greater than a This test statistic leads to a decision to... O reject the null O accept the null O…
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