Consider the accompanying data on x = research and development expenditure (millions of dollars) and y = growth rate (% per year) for eight different industries. x 2.025 5.039 0.906 3.573 1.157 0.327 0.378 0.191 y 1.90 3.96 2.44 0.88 0.37 −0.90 0.49 1.01 (a) Would a simple linear regression model provide useful information for predicting growth rate from research and development expenditure? Test the appropriate hypotheses using a 0.05 significance level. Calculate the test statistic. (Round your answer to two decimal places.) t = Use technology to find the P-value for this test. (Round your answer to four decimal places.) P-value = What can you conclude? Reject H0. We have convincing evidence of a useful linear relationship between growth rate and research and development expenditure.Fail to reject H0. We have convincing evidence of a useful linear relationship between growth rate and research and development expenditure. Fail to reject H0. We do not have convincing evidence of a useful linear relationship between growth rate and research and development expenditure.Reject H0. We do not have convincing evidence of a useful linear relationship between growth rate and research and development expenditure. (b) Use a 90% confidence interval to estimate the average change in growth rate associated with a $1,000,000 increase in expenditure. (Use technology to find the critical value. Round your answers to four decimal places.) , % per yr Interpret the resulting interval. We are 90% confident that the mean change in growth rate associated with a $1,000 increase in research and development expenditure is outside this interval.We are 90% confident that the mean change in growth rate associated with a $1,000 increase in research and development expenditure is in this interval. We are 90% confident that the mean change in research and development expenditure associated with a 1 percent change in growth rate is outside this interval.We are 90% confident that the mean change in research and development expenditure associated with a 1 percent change in growth rate is in this interval.
Consider the accompanying data on x = research and development expenditure (millions of dollars) and y = growth rate (% per year) for eight different industries. x 2.025 5.039 0.906 3.573 1.157 0.327 0.378 0.191 y 1.90 3.96 2.44 0.88 0.37 −0.90 0.49 1.01 (a) Would a simple linear regression model provide useful information for predicting growth rate from research and development expenditure? Test the appropriate hypotheses using a 0.05 significance level. Calculate the test statistic. (Round your answer to two decimal places.) t = Use technology to find the P-value for this test. (Round your answer to four decimal places.) P-value = What can you conclude? Reject H0. We have convincing evidence of a useful linear relationship between growth rate and research and development expenditure.Fail to reject H0. We have convincing evidence of a useful linear relationship between growth rate and research and development expenditure. Fail to reject H0. We do not have convincing evidence of a useful linear relationship between growth rate and research and development expenditure.Reject H0. We do not have convincing evidence of a useful linear relationship between growth rate and research and development expenditure. (b) Use a 90% confidence interval to estimate the average change in growth rate associated with a $1,000,000 increase in expenditure. (Use technology to find the critical value. Round your answers to four decimal places.) , % per yr Interpret the resulting interval. We are 90% confident that the mean change in growth rate associated with a $1,000 increase in research and development expenditure is outside this interval.We are 90% confident that the mean change in growth rate associated with a $1,000 increase in research and development expenditure is in this interval. We are 90% confident that the mean change in research and development expenditure associated with a 1 percent change in growth rate is outside this interval.We are 90% confident that the mean change in research and development expenditure associated with a 1 percent change in growth rate is in this interval.
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter1: Equations And Graphs
Section: Chapter Questions
Problem 10T: Olympic Pole Vault The graph in Figure 7 indicates that in recent years the winning Olympic men’s...
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Question
Consider the accompanying data on x = research and development expenditure (millions of dollars) and y = growth rate (% per year) for eight different industries.
x | 2.025 | 5.039 | 0.906 | 3.573 | 1.157 | 0.327 | 0.378 | 0.191 |
---|---|---|---|---|---|---|---|---|
y | 1.90 | 3.96 | 2.44 | 0.88 | 0.37 |
−0.90
|
0.49 | 1.01 |
(a)
Would a simple linear regression model provide useful information for predicting growth rate from research and development expenditure? Test the appropriate hypotheses using a 0.05 significance level.
Calculate the test statistic. (Round your answer to two decimal places.)
t =
Use technology to find the P-value for this test. (Round your answer to four decimal places.)
P-value =
What can you conclude?
Reject H0. We have convincing evidence of a useful linear relationship between growth rate and research and development expenditure.Fail to reject H0. We have convincing evidence of a useful linear relationship between growth rate and research and development expenditure. Fail to reject H0. We do not have convincing evidence of a useful linear relationship between growth rate and research and development expenditure.Reject H0. We do not have convincing evidence of a useful linear relationship between growth rate and research and development expenditure.
(b)
Use a 90% confidence interval to estimate the average change in growth rate associated with a $1,000,000 increase in expenditure. (Use technology to find the critical value. Round your answers to four decimal places.)
Interpret the resulting interval.
We are 90% confident that the mean change in growth rate associated with a $1,000 increase in research and development expenditure is outside this interval.We are 90% confident that the mean change in growth rate associated with a $1,000 increase in research and development expenditure is in this interval. We are 90% confident that the mean change in research and development expenditure associated with a 1 percent change in growth rate is outside this interval.We are 90% confident that the mean change in research and development expenditure associated with a 1 percent change in growth rate is in this interval.
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