Katie thinks that people living in a rural environment have a healthier lifestyle than other people. She believes the average lifespan in the USA is 77 years. A random sample of 11 obituariesfrom newspapers from rural towns in Idaho give = 81.71 and s = 0.74. Does this sample provide evidence that people living in rural Idaho communities live longer than 77 years?(a) State the null and alternative hypotheses: (Type "mu" for the symbol μ, e.g. mu >1 for the mean is greater than 1, mu < 1 for the mean is less than 1, mu not = 1 for the mean is notequal to 1)Ho:HA:(b) Find the test statistic, t =

Step 1: List the given values.We are given the following:population mean lifespan in the USA, μ = 77…

Answered: Katie thinks that people living in a…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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Lois thinks that people living in a rural environment have a healthier lifestyle than other people. She believes the average lifespan in the USA is 77 years. A random sample of 13 obituaries from newspapers from rural towns in Idaho give ?¯=80.56 and ?=0.57. Does this sample provide evidence that people living in rural Idaho communities live longer than 77 years? (a) State the null and alternative hypotheses: (Type "mu" for the symbol ?μ , e.g. mu >>1 for the mean is greater than 1, mu << 1 for the mean is less than 1, mu not = 1 for the mean is not equal to 1) ?0:??: (b) Find the test statistic, t = (c) Answer the question: Does this sample provide evidence that people living in rural Idaho communities live longer than 77 years? (Use a 10% level of significance)(Type: Yes or No)
Andrew thinks that people living in a rural environment have a healthier lifestyle than other people. He believes the average lifespan in the USA is 77 years. A random sample of 15 obituaries from newspapers from rural towns in Idaho give ?¯=77.57 and ?=0.64. Does this sample provide evidence that people living in rural Idaho communities live longer than 77 years? (a) State the null and alternative hypotheses: (Type "mu" for the symbol ? , e.g. mu >1 for the mean is greater than 1, mu < 1 for the mean is less than 1, mu not = 1 for the mean is not equal to 1)?0 : ?? : (b) Find the test statistic, t =
Question 10
A sample of ?=14n=14 observations is drawn from a normal population with ?=1030μ=1030 and ?=200σ=200. Find each of the following: A. ?(?¯>1110)P(X¯>1110) Probability = B. ?(?¯<944)P(X¯<944) Probability = C. ?(?¯>997)P(X¯>997) Probability =
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QUESTION 5 What is iny 0.8944)? (Use the normal tables and report to two digits.) QUESTION 6 What is 0inyl 0.9878)? (Use the normal tables and report to two digits.)
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A meteorologist stated that the average temperature during July in Chattanooga was 80 degrees. A sample of July temperatures over a 32-year period was taken. The correct set of hypotheses is
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1) An insurance investigator has observed the people with some astrological signs tend to be safer drivers the people with other signs. Using insurance records, the investigator classified 200 people according to their astrological signs and whether or not they were involved in a car accident during the previous 12 months. The data are as follows: Libra Leo Gemini Accident 7 4 19 No Accident 73 46 1 Do the data indicate a significant relationship between sign and accidents? Compute a Chi-Square Test at the .05 level of significance.
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