The price per share of stock for a sample of 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. Beginning of 1st end of 1stCompany Quarter QuarterBank of New York Mellon 53.82 54.19 Kraft Foods 77.02 55.70 E.I. du Pont de Nemours and Company 109.00 102.57 Consolidated Edison 83.58 79.95 Johnson & Johnson 139.23 126.01 Union Pacific 135.78 132.73 Comcast 41.07 32.06 Applied Materials 53.04 50.91 Pfizer 36.44 35.40 General Electric 17.98 14.05 AT&T 38.54 32.54 Cisco Systems 38.86 44.83 Home Depot 188.03 184.63 JP Morgan Chase 107.95 108.78 Procter & Gamble 90.65 71.96 Verizon 53.53 48.82 Devon Energy 42.23 36.20 Lilly 84.68 79.07 Microsoft 85.95 95.00 Coca Cola 45.59 42.59 Qualcomm 65.20 50.82 Exxon Mobil Corporation85.03 76.95 PG&E Corporation 44.49 46.27 Oracle Corporation46.63 45.95 Chevron 127.58 129.86 a. Let denote the percentage change in price per share for company whereUse 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. d1 = end of 1st quarter- beginnning of 1st quarter / beginning of 1st quarter (to 3 decimals) b. What is the 90% 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. confidence interval (,) ( to 3 decimals)

The price per share of stock for a sample of 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. Beginning of 1st end of 1stCompany Quarter QuarterBank of New York Mellon 53.82 54.19 Kraft Foods 77.02 55.70 E.I. du Pont de Nemours and Company 109.00 102.57 Consolidated Edison 83.58 79.95 Johnson & Johnson 139.23 126.01 Union Pacific 135.78 132.73 Comcast 41.07 32.06 Applied Materials 53.04 50.91 Pfizer 36.44 35.40 General Electric 17.98 14.05 AT&T 38.54 32.54 Cisco Systems 38.86 44.83 Home Depot 188.03 184.63 JP Morgan Chase 107.95 108.78 Procter & Gamble 90.65 71.96 Verizon 53.53 48.82 Devon Energy 42.23 36.20 Lilly 84.68 79.07 Microsoft 85.95 95.00 Coca Cola 45.59 42.59 Qualcomm 65.20 50.82 Exxon Mobil Corporation85.03 76.95 PG&E Corporation 44.49 46.27 Oracle Corporation46.63 45.95 Chevron 127.58 129.86 a. Let denote the percentage change in price per share for company whereUse 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. d1 = end of 1st quarter- beginnning of 1st quarter / beginning of 1st quarter (to 3 decimals) b. What is the 90% 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. confidence interval (,) ( to 3 decimals)

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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Question

Click on the datafile logo to reference the data.

Beginning of 1st end of 1st
Company Quarter Quarter
Bank of New York Mellon 53.82 54.19
Kraft Foods 77.02 55.70
E.I. du Pont de Nemours and Company 109.00 102.57
Consolidated Edison 83.58 79.95
Johnson & Johnson 139.23 126.01
Union Pacific 135.78 132.73
Comcast 41.07 32.06
Applied Materials 53.04 50.91
Pfizer 36.44 35.40
General Electric 17.98 14.05
AT&T 38.54 32.54
Cisco Systems 38.86 44.83
Home Depot 188.03 184.63
JP Morgan Chase 107.95 108.78
Procter & Gamble 90.65 71.96
Verizon 53.53 48.82
Devon Energy 42.23 36.20
Lilly 84.68 79.07
Microsoft 85.95 95.00
Coca Cola 45.59 42.59
Qualcomm 65.20 50.82
Exxon Mobil Corporation85.03 76.95
PG&E Corporation 44.49 46.27
Oracle Corporation46.63 45.95
Chevron 127.58 129.86
a. Let denote the percentage change in price per share for company whereUse 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.

d1 = end of 1st quarter- beginnning of 1st quarter / beginning of 1st quarter

(to 3 decimals)

b. What is the 90% 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.

confidence interval (,) ( to 3 decimals)

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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