Homework Answers
The result is significant at
p<0.05 we reject null hypothesis there is a difference between
mean price
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hapter 12 A realtor wishes to assess whether a difference exists between home prices in three...
Use the following to answer questions 14-15: A realtor wishes to assess whether a difference exists...
Use the following to answer questions 14-15: A realtor wishes to assess whether a difference exists between home prices in three subdivisions. Independent samples of homes from each of the three subdivisions are obtained and their prices are recorded. The analysis of variance results for comparing these prices are provided below: DF Mean square 78.724.66 Source Groups Error Total Sum of squares 157.44 253.50 410.94 15 17 16.90 14. How many homes were sampled in total? A) 15 B) 17...
ANOVA A study is designed to examine whether there is a difference in mean daily calcium intake a...
ANOVA
A study is designed to examine whether there is a difference in
mean daily calcium intake among three groups of adults with normal
bone density (Norm), adults with osteopenia (OstPNia) (a low bone
density which may lead to osteoporosis) and adults with
osteoporosis (OstPSis). A total of twenty-one adults at age 60 was
recruited in the study (7 adults in each group). Each participant's
daily calcium intake was measured based on reported food intake and
supplements in milligrams. We...
My Ask You C-reactive protein (CRP) is a substance that can be measured in the blood. Values incr...
My Ask You C-reactive protein (CRP) is a substance that can be measured in the blood. Values increase substantially within & hours of an infection and reach a peak within 24 to 48 hours after. In adults, chronically high values have been linked to an increased risk of cardiovascular disease. In a study of apparently healthy children aged 6 to 60 months in Papua New Guinea, CRP was measured in 90 children. The units are milligrams per liter (mg/l). Here...
The price of 30 random foods were compared between two different superstore chains. The prices for...
The price of 30 random foods were compared between two different superstore chains. The prices for the products are shown in the accompanying data table. Complete parts (a) through (c) below. Click the icon to view the data table for the prices of the products. a. At the 0.01 level of significance, is there evidence that the mean price of items is higher at store A than at store B? Let Hy be the mean prices at store A and...
PART F PART i In 1955, Life Magazine reported that a 25-year-old mother of three worked,...
PART F PART i
In 1955, Life Magazine reported that a 25-year-old mother of three worked, on average, an 80 hour week. Recently, many groups have been studying whether or not the women's movement has, in fact, resulted in an increase in the average work week for women (combining employment and at-home work). Suppose a study was done to determine if the mean work week has increased. 68 women were surveyed with the following results. The sample mean was 83;...
A study of reading comprehension in children compared three methods of instruction. The three methods of...
A study of reading comprehension in children compared three methods of instruction. The three methods of instruction are called Basal, DRTA, and Strategies. Basal is the traditional method of teaching, while DRTA and Strategies are two innovative methods based on similar theoretical considerations. The READING data set includes three response variables (posttests) that the new methods were designed to improve. Analyze The Posttest 2 score using ANOVA. a. What is the response variable? Method of instruction Traditional teaching method Innovative...
Q2) Independent-Samples t-Test (15 points total) In a research project, researchers collected demographic and health data...
Q2) Independent-Samples t-Test (15 points total) In a research project, researchers collected demographic and health data from a sample of elderly residents in the community. To examine any possible gender differences in their sample, they want to see if the females and the males differ significantly on the education level (number of years of formal schooling). The researchers are not predicting any direction in the possible gender differences so the hypotheses should be non-directional. They would like to run a...
Q2) Independent-Samples t-Test (15 points total) Help with H, I, J, K, L please! In a...
Q2) Independent-Samples t-Test (15 points total) Help with H, I, J, K, L please! In a research project, researchers collected demographic and health data from a sample of elderly residents in the community. To examine any possible gender differences in their sample, they want to see if the females and the males differ significantly on the education level (number of years of formal schooling). The researchers are not predicting any direction in the possible gender differences so the hypotheses should...
Periodically, Merrill Lynch customers are asked to evaluate Merill Lynch financial consultants and services. Higher ratings...
Periodically, Merrill Lynch customers are asked to evaluate Merill Lynch financial consultants and services. Higher ratings on the client satisfactian survey indicate better service with 7 the maximum service rating. Independent samples of service ratings for two financial consultants are summarized here. Consultant A has 10 years of experience, whereas consultant B has 1 year of experience. Use a 05 and test to see whether the consaltant with more experience has the higher population mean service rating Excel File: data10-17.xs...
M5 Assignment (30 points) Help with J, K, I and M please! General instruction: Complete the...
M5 Assignment (30 points) Help with J, K, I and M please! General instruction: Complete the guided Practice Problem first, if you have not done so. It will help you become proficient in answering the questions in this assignment. Check out the module, Assignment Guides, which demonstrates how to show the math/process work and provides instruction on essential procedures in Word and Excel, and APA formatting examples. Use this Word document to fill in the answers to the questions. You...
Use the following to answer questions 14-15: A realtor wishes to assess whether a difference exists between home prices in three subdivisions. Independent samples of homes from each of the three subdivisions are obtained and their prices are recorded. The analysis of variance results for comparing these prices are provided below: DF Mean square 78.724.66 Source Groups Error Total Sum of squares 157.44 253.50 410.94 15 17 16.90 14. How many homes were sampled in total? A) 15 B) 17...
ANOVA
A study is designed to examine whether there is a difference in
mean daily calcium intake among three groups of adults with normal
bone density (Norm), adults with osteopenia (OstPNia) (a low bone
density which may lead to osteoporosis) and adults with
osteoporosis (OstPSis). A total of twenty-one adults at age 60 was
recruited in the study (7 adults in each group). Each participant's
daily calcium intake was measured based on reported food intake and
supplements in milligrams. We...
My Ask You C-reactive protein (CRP) is a substance that can be measured in the blood. Values increase substantially within & hours of an infection and reach a peak within 24 to 48 hours after. In adults, chronically high values have been linked to an increased risk of cardiovascular disease. In a study of apparently healthy children aged 6 to 60 months in Papua New Guinea, CRP was measured in 90 children. The units are milligrams per liter (mg/l). Here...
The price of 30 random foods were compared between two different superstore chains. The prices for the products are shown in the accompanying data table. Complete parts (a) through (c) below. Click the icon to view the data table for the prices of the products. a. At the 0.01 level of significance, is there evidence that the mean price of items is higher at store A than at store B? Let Hy be the mean prices at store A and...
PART F PART i
In 1955, Life Magazine reported that a 25-year-old mother of three worked, on average, an 80 hour week. Recently, many groups have been studying whether or not the women's movement has, in fact, resulted in an increase in the average work week for women (combining employment and at-home work). Suppose a study was done to determine if the mean work week has increased. 68 women were surveyed with the following results. The sample mean was 83;...
Periodically, Merrill Lynch customers are asked to evaluate Merill Lynch financial consultants and services. Higher ratings on the client satisfactian survey indicate better service with 7 the maximum service rating. Independent samples of service ratings for two financial consultants are summarized here. Consultant A has 10 years of experience, whereas consultant B has 1 year of experience. Use a 05 and test to see whether the consaltant with more experience has the higher population mean service rating Excel File: data10-17.xs...
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