QUESTION 49Question 30. Given a sample of n= 5 data values:X1=12, x2 23, x3 26, x4= 28, and x5 = 10Up to three decimal places, find the following:EIn(x)1=1QUESTION 50Question 28. Given a sample of n=5 data values:X1 = 12, x2=23, x3 = 26, x4= 28, and x5 = 10%3DFind the following:Exu-1)1=2

We have given a sample of n=5 data values i.e., x1=12, x2=23, x3=26, x4=28, and x5=10

Question 30. Given a sample of n=5 data values: X1=12, x2 23, x3=26, x4=28, and xs = 10 %3D %3D Up to three decimal places, find the following: En(x) 1=1 QUESTION 50 Question 28. Given a sample of n=5 data values: X1=12, x2-23, x3= 26, x4= 28, and xs = 10 %! Find the following: Exu-1) 1-2

Question 30. Given a sample of n=5 data values: X1=12, x2 23, x3=26, x4=28, and xs = 10 %3D %3D Up to three decimal places, find the following: En(x) 1=1 QUESTION 50 Question 28. Given a sample of n=5 data values: X1=12, x2-23, x3= 26, x4= 28, and xs = 10 %! Find the following: Exu-1) 1-2

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)

6th Edition

ISBN:9781337111348

Author:Bruce Crauder, Benny Evans, Alan Noell

Publisher:Bruce Crauder, Benny Evans, Alan Noell

Chapter5: A Survey Of Other Common Functions

Section5.3: Modeling Data With Power Functions

Problem 6E: Urban Travel Times Population of cities and driving times are related, as shown in the accompanying...

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Urban Travel Times Population of cities and driving times are related, as shown in the accompanying table, which shows the 1960 population N, in thousands, for several cities, together with the average time T, in minutes, sent by residents driving to work. City Population N Driving time T Los Angeles 6489 16.8 Pittsburgh 1804 12.6 Washington 1808 14.3 Hutchinson 38 6.1 Nashville 347 10.8 Tallahassee 48 7.3 An analysis of these data, along with data from 17 other cities in the United States and Canada, led to a power model of average driving time as a function of population. a Construct a power model of driving time in minutes as a function of population measured in thousands b Is average driving time in Pittsburgh more or less than would be expected from its population? c If you wish to move to a smaller city to reduce your average driving time to work by 25, how much smaller should the city be?
Question # 5: Twenty-five army inductees in Ontario were given a blood test to determine their blood type. The data set is A B B AB O O O B AB B B B O A O A O O O AB AB A O B A Calculate the single-number estimate of the population proportion of the army inductees who got blood type O.
Question 4 a The researcher is concerned that older persons may not be knowledgeable of the COFLU-20. Assuch, he is interested in investigating the association between the age of the respondents and theirknowledge level. Table 2 below shows the knowledge level of respondents, by age group.Table 2Age Group Knowledge Level TotalPoor Satisfactory Good18 - 25 33 16 13 6226 - 34 30 18 12 6035 - 44 29 14 12 5545 - 54 36 16 18 7055 - 75 17 14 22 53Total 145 78 77 300 Conduct a test, at the 5% level of significance, to determine whether the data provided sufficientevidence to conclude that an association exists between age group and knowledge level. (i) State the hypotheses to be tested:H0:H1: Calculate:(ii) state the degrees of freedom for this test (iii) the p-value for this test, given that the chi-square test statistic, x2, is 11.029. (iv) state the conclusion for the test. Give reason for your answer.
QUESTION 4(a) The researcher is concerned that older persons may not be knowledgeable of the COFLU-20. Assuch, he is interested in investigating the association between the age of the respondents and theirknowledge level. Table 2 below shows the knowledge level of respondents, by age group.Table 2Age Group Knowledge Level TotalPoor Satisfactory Good18 - 25 33 16 13 6226 - 34 30 18 12 6035 - 44 29 14 12 5545 - 54 36 16 18 7055 - 75 17 14 22 53Total 145 78 77 300Conduct a test, at the 5% level of significance, to determine whether the data provided sufficientevidence to conclude that an association exists between age group and knowledge level.(i) State the hypotheses to be tested:H0:H1: Calculate:(ii) state the degrees of freedom for this test (iii) the p-value for this test, given that the chi-square test statistic, 2, is 11.029.(iv) state the conclusion for the test. Give reason for your answer.
QUESTION FOUR The following are the variations of ratings of Five Richfield college researchers on the institutions National Innovative Research Initiative (NIRI) project for the year 2020: RATINGS 3 4 7 10 15 30 Using the data values given above, calculate the following: 4.1.1 Arithmetic mean 4.1.2 Median
Question 3: According to the journal Chemical Engineering, an important property of a fiber is its water absorbency. A random sample of 20 pieces of cotton fiber is taken and the absorbency on each piece was measured. The following are the absorbency values:18.71 21.41 20.72 21.81 19.29 22.43 20.17 23.71 19.44 20.50 18.92 20.33 23.00 22.85 19.25 21.77 22.11 19.77 18.04 21.12 17.89 19.63 22.85 20.49(a) Calculate the sample mean and median for the above sample values.
Question 4: The following data includes the year, make, model, mileage (in thousands of miles) and asking price (in US dollars) for each of 13 used Honda Odyssey minivans. The data was collected from the Web site of the Seattle P-I on April 25, 2005. year make model mileage price 2004 Honda Odyssey EXL 20 26900 2004 Honda Odyssey EX 21 23000 2002 Honda Odyssey 33 17500 2002 Honda Odyssey 41 18999 2001 Honda Odyssey EX 43 17200 2001 Honda Odyssey EX 67 18995 2000 Honda Odyssey LX 46 13900 2000 Honda Odyssey EX 72 15250 2000 Honda Odyssey EX 82 13200 2000 Honda Odyssey 99 11000 1999 Honda Odyssey 71 13900 1998 Honda Odyssey 85 8350 1995 Honda Odyssey EX 100 5800 Compute the correlation between age (in years) and mileage for these minivans. (Assume the correlation conditions have been satisfied and round your answer to the nearest 0.001.)
Question 1 The following table shows the number of shirts by sizes that are manufactured in a factory on a particular week: The information is as follows: Extra Small Small Medium Large Extra Large 390 470 520 680 440 a) It was discovered that the sizing of some shirts was labelled incorrectly.(i) Give two reasons why it would be necessary to examine a sample of the shirts produced rather than examine the entire weekly production. (ii) State two differences between a cluster sample and a stratified random sample in this situation. (iii) Using the stratified random sampling technique, calculate the number of medium shirts that will be selected if we require a sample of 375 shirts.
Question #1 The accompanying table lists the numbers of words spoken in a day by each member of 56 different randomly selected couples. Complete parts (a) and (b) below. View the data on words spoken in a day by the couples. Words spoken in a day Male Female 28,916 19,097 17,080 23,982 5,369 5,101 28,363 17,816 25,958 10,524 8,297 16,688 20,503 12,766 15,942 18,586 26,897 11,822 22,664 18,230 11,691 17,815 11,359 12,247 11,760 16,633 19,899 24,852 20,136 4,675 583 19,210 20,966 24,220 11,870 16,819 21,854 14,898 16,588 13,262 14,299 29,193 20,147 9,699 6,488 17,425 6,670 4,257 25,126 12,358 8,885 20,050 11,650 12,185 11,007 20,530 13,225 21,563 17,576 12,187 15,501…
QUESTION 8 Rocky Mountain National Park is a popular park for outdoor recreation activities in Colorado. According to U.S. National Park Service statistics, 46.7% of visitors to Rocky Mountain National Park in 2018 entered through the Beaver Meadows park entrance, 24.3% of visitors entered through the Fall River park entrance, 6.3% of visitors entered through the Grand Lake park entrance, and 22.7% of visitors had no recorded point of entry to the park.† Consider a random sample of 175 Rocky Mountain National Park visitors. Use the normal approximation of the binomial distribution to answer the following questions. (Round your answers to four decimal places.) (a) What is the probability that at least 85 visitors had a recorded entry through the Beaver Meadows park entrance? (b) What is the probability that at least 80 but less than 90 visitors had a recorded entry through the Beaver Meadows park entrance? (c) What is the probability that fewer than 12 visitors had a…
Question(13): The researcher decided to conduct the study again and selected an additional 10 children from the full time kindergarden and an additional 10 children from partime kindergarden.This time they matched the children in full time and part time based on SES, gender, age and vocabulary scores. They based their hypotheses on the finding from a previous study and wanted to see if children who attended full time kindergarden would have better short term memory recall comparred to children who attended partime kindergarden. Researcher read a list of 20 words then waited for two minutes, as the children had snacks, then ask then to tell them as many words as the could from the list of 20 words. Those who remember got a score of 1. Here is a summary of the result. full time kindergarden: 15 9 10 8 11 7 14 12 11 13 part time kindergarden: 10 7 9 8 12 6 8 10 7 9 Test the hypothses at (alpha…
Question 5: A random sample of 50 employees is chosen for a company…