Example 20.22 Splice the two indices with base-year 1990 = 100.YearIndex199010019911101992120199313019941501995X₁1996X21997X3(Base 1994 = 100)100120150180

Answered: Image /qna-images/answer/f01cf265-d32a-4386-b07c-bd19586a8a01.jpg

Answered: 20.22 Splice the two indices with…

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 following diagram shows a boxplot for the lifetimes (in months) of a sample of 30 light- bulbs.
(a) What is the GINI index of the dataset? (b) What is the GINI index of the split on A1 and that on A2 respectively?
In a genetic inheritance study discussed by Margolin [1988], samples of individuals from several ethnic groups were taken. Blood samples were collected from each individual and several variables measured. Compare the groups labeled “Native American” and “Caucasian” with respect to the variable MSCE (mean sister chromatid exchange). Thedata is as follows:Native American: 8.50 9.48 8.65 8.16 8.83 7.76 8.63Caucasian: 8.27 8.20 8.25 8.14 9.00 8.10 7.20 8.32 7.70Is there any difference in the centers of location?
Marine biologists have noticed that the color of the outermost growth band on a clam tends to be related to the time of year in which the clam dies. A biologist conducted a small investigation of whether this is true for the species Protothaca staminea. She collected a sample of 50 clam shells in February and 27 clam shells in March. 15 of the shells from February had a dark color on the outermost growth band, whereas 8 of the shells from March had a dark color on the outermost growth band. Carry out a hypothesis test to see if there is a difference in the proportion of shells with a dark outermost growth band between the two months. The point estimate for the true difference in proportion of dark growth bands between February and March is:
Marine biologists have noticed that the color of the outermost growth band on a clam tends to be related to the time of year in which the clam dies. A biologist conducted a small investigation of whether this is true for the species Protothaca staminea. She collected a sample of 50 clam shells in February and 27 clam shells in March. 15 of the shells from February had a dark color on the outermost growth band, whereas 8 of the shells from March had a dark color on the outermost growth band. Carry out a hypothesis test to see if there is a difference in the proportion of shells with a dark outermost growth band between the two months. Let ? = 0.01. A) The point estimate for the true difference in proportion of dark growth bands between February and March is:
Marine biologists have noticed that the color of the outermost growth band on a clam tends to be related to the time of year in which the clam dies. A biologist conducted a small investigation of whether this is true for the species Protothaca staminea. She collected a sample of 50 clam shells in February and 27 clam shells in March. 15 of the shells from February had a dark color on the outermost growth band, whereas 8 of the shells from March had a dark color on the outermost growth band. Carry out a hypothesis test to see if there is a difference in the proportion of shells with a dark outermost growth band between the two months. Let ? = 0.01.Note: Do all calculations as February - March A) The point estimate for the true difference in proportion of dark growth bands between February and March is: I need help and webassign rejected the 0.0037 as the answer. I'm so lost. I emailed my professor and he hasn't gotten back to me. Please help. Thank you.
Suppose that in a memory experiment the rate of memorizing is given...
An employee claims that 20% of the email she receives is personal, 60% is work related, and 20% is spam. The high level of spam she is receiving is frustrating, so she creates some new filters. She then selects a random sample of 50 emails over the next several weeks. She determines that she received 10 personal emails, 38 work-related emails, and 2 spam emails. She would like to know if the distribution of emails she receives has changed. What is the value of the chi-square test statistic and P-value
An employee claims that 20% of the email she receives is personal, 60% is work related, and 20% is spam. The high level of spam she is receiving is frustrating, so she creates some new filters. She then selects a random sample of 50 emails over the next several weeks. She determines that she received 10 personal emails, 38 work-related emails, and 2 spam emails. She would like to know if the distribution of emails she receives has changed. What is the value of the chi-square test statistic and P-value? Find the chi-square table here. χ2 = 8.53, P-value is between 0.01 and 0.02 χ2 = 8.53, P-value is between 0.025 and 0.05 χ2 = 33.68, P-value is less than 0.0005 χ2 = 33.68, P-value is greater than 0.25
The following table is based on information from the U.S. Census Bureau regarding the type of health insurance coverage of people by age in the year 2006: Find P(P or D)
The following is data for the first and second Quiz scores for 8 students in a class. First Quiz Second Quiz 11 7 27 28 32 30 34 33 39 36 40 36 43 38 50 41 Predict the value of the second quiz score if a student had a score of 44 on the first quiz.
Question 1a) The following stem-and leaf display of the dividend yields ($) for common stocks Stem-and-Leaf DisplayN = x Leaf Unit = 1.05 2 3344411 2 668899(14) 3 00112223344444y 3 5677889912 4 00023455 4 66789 i. Determine the value of x and y.ii. What is the value of the median?iii. Find the modal yield of this data set. b) The table below is based on the Stem and leaf diagrams showing dividend yields ($) for common stocksDividend Yielded ($) Frequency 20-24 5 25-29 6 30-34 14 35-39 X 40-44 6 45-49 5 i. Use the stem and leaf diagram in 3a) to determine the value of x. ii. Using the table above to…

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20.22 Splice the two indices with base-year 1990 = 100. Year Index 1990 100 1991 110 1992 120 1993 130 1994 150 1995 1996 1997 3 50 4 X₁ X2 X3 (Base 1994 = 100) 100 120 150 180