The price per share of stock for a sample of 25 companies was recorded at the beginning of the first financial quarter and then again at the end of the first financial quarter. How stocks perform during the f quarter is an indicator of what is ahead for the stock market and the economy. Use the sample data in the file StockQuarter to answer the following. Click on the datafile logo to reference the data. DATA file Company Bank of New York Mellon Kraft Foods E.I. du Pont de Nemours and Company Consolidated Edison Johnson & Johnson Union Pacific Comcast Applied Materials Pfizer , 7.46) (to 3 decimals) General Electric AT&T Cisco Systems Home Depot JP Morgan Chase Procter & Gamble Verizon Devon Energy Lilly Microsoft Coca Cola Qualcomm Exxon Mobil Corporation PG&E Corporation Oracle Corporation Chevron a. Let di denote the percentage change in price per share for company i where Beginning End of 1st of 1st d₁ = ! Quarter 53.82 77.02 109.00 83.58 139.23 135.78 41.07 53.04 36.44 17.98 38.54 38.86 188.03 107.95 90.65 53.53 42.23 84.68 85.95 45.59 65.20 85.03 44.49 46.63 127.58 Quarter 54.19 55.70 102.57 79.95 126.01 132.73 32.06 50.91 35.40 14.05 32.54 44.83 184.63 108.78 71.96 48.82 36.20 79.07 95.00 42.59 50.82 76.95 end of 1" quarter price per share - beginning of 1" quarter price per share beginning of 1 quarter price per share Use the sample mean of these values to estimate the percentage change in the stock price over the first quarter. Do not round intermediate calculations. Enter negative value as negative number, if any. (to 3 decimals) 46.27 45.95 129.86 b. What is the 95% confidence interval estimate of the population mean percentage change in the price per share of stock during the first quarter? Do not round intermediate calculations. Enter negative va megative numbers, if any. Confidence interval (

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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Transcribed Image Text:The price per share of stock for a sample of 25 companies was recorded at the beginning of the first financial quarter and then again at the end of the first financial quarter. How stocks perform during the first quarter is an indicator of what is ahead for the stock market and the economy. Use the sample data in the file StockQuarter to answer the following. Click on the datafile logo to reference the data. DATA file a. Let di denote the percentage change in price per share for company i where 7.46 Confidence interval Interpret this result. The stock market experiences a decline Company Bank of New York Mellon Kraft Foods E.I. du Pont de Nemours and Company Consolidated Edison ) (to 3 decimals) Johnson & Johnson Union Pacific Comcast Applied Materials. Pfizer General Electric AT&T Cisco Systems Home Depot ✔ JP Morgan Chase Procter & Gamble Verizon Devon Energy Lilly Microsoft Coca Cola Qualcomm Exxon Mobil Corporation PG&E Corporation Oracle Corporation Chevron end of 1st quarter price per share - beginning of 1st quarter price per share beginning of 1st quarter price per share Use the sample mean of these values to estimate the percentage change in the stock price over the first quarter. Do not round intermediate calculations. Enter negative value as negative number, if any. (to 3 decimals) in prices. di b. What is the 95% confidence interval estimate of the population mean percentage change in the price per share of stock during the first quarter? Do not round intermediate calculations. Enter negative values as negative numbers, if any. Beginning End of 1st of 1st = Quarter 53.82 77.02 109.00 83.58 139.23 135.78 41.07 53.04 36.44 17.98 38.54 38.86 188.03 107.95 90.65 53.53 42.23 84.68 85.95 45.59 65.20 85.03 44.49 46.63 127.58 Quarter 54.19 55.70 102.57 79.95 126.01 132.73 32.06 50.91 35.40 14.05 32.54 44.83 184.63 108.78 71.96 48.82 36.20 79.07 95.00 42.59 50.82 76.95 46.27 45.95 129.86

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