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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Andrew thinks that people living in a rural environment have a healthier lifestyle than other people. He believes the average : 78.6 and lifespan in the USA is 77 years. A random sample of 8 obituaries from newspapers from rural towns in Idaho give a = s = 1.15. 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 u , 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) Но : На: (b) Find the standardized 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)
The hemoglobin count (HC) in grams per 100 milliliters of whole blood is approximately normally distributed with population mean 14 for healthy adult women. Suppose a female patient has had 19 laboratory blood tests during the past year. Her average HC is 12.36 with s = 1.11. Is there evidence that her average HC is not 14? (a) State the null and alternative hypotheses: (Type "mu" for the symbol u , 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) Но : На: (b) Find the standardized test statistic, t = (c) Answer the question: Is there evidence that her average HC is not 14? (Use a 1% level of significance) (Type: Yes or No)
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 11 obituaries from newspapers from rural towns in Idaho give x¯=78.57 and s=0.96 . 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) H0: Ha: (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)
The hemoglobin count (HC) in grams per 100 milliliters of whole blood is approximately normally distributed with population mean 14 for healthy adult women. Suppose a female patient has had 8 laboratory blood tests during the past year. Her average HC is 13.45 with s = 2.22. Is there evidence that her average HC is not 14? (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) Но : H₁: (b) Find the test statistic (c) Answer the question: Is there evidence that her average HC is not 14? (Use a 1% level of significance) (Type: Yes or No)
The average height of 18-year-old American women is 64.2 inches. You wonder whether the mean height of this year's female graduates from your local high school is different from the national average. You measure an SRS of 78 female graduates and find that x⎯⎯⎯x¯ = 63.1 inches. What are your null and alternative hypotheses? Note: Type in "mu" as the substitute for μμ and "!=" for ≠≠. H0:Ha:
The hemoglobin count (HC) in grams per 100 milliliters of whole blood is approximately normally distributed with population mean 14 for healthy adult women. Suppose a female patient has had 19 laboratory blood tests during the past year. Her average HC is 13.49 with s = 2.48. Is there evidence that her average HC is not 14? (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)H0�0 : equation editor Equation Editor Ha�� : equation editor Equation Editor (b) Find the test statistic (give to at least 3 decimal places), t = equation editor Equation Editor (c) Answer the question: Is there evidence that her average HC is not 14? (Use a 1% level of significance)(Type: Yes or No)
The hemoglobin count (HC) in grams per 100 milliliters of whole blood is approximately normally distributed with population mean 14 for healthy adult women. Suppose a female patient has had 16 laboratory blood tests during the past year. Her average HC is 16.94 with s = 1.05. Is %3D there evidence that her average HC is not 14? (a) State the null and alternative hypotheses: (Type "mu" for the symbol u, 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) Ho : На (b) Find the test statistic (give to at least 3 decimal places), t =
The hemoglobin count (HC) in grams per 100 milliliters of whole blood is approximately normally distributed with population mean 14 for healthy adult women. Suppose a female patient has had 18 laboratory blood tests during the past year. Her average HC is 16.83 with s = 0.76. Is there evidence that her average HC is not 14? (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)H0: Ha: (b) Find the test statistic (give to at least 3 decimal places), t = (c) Answer the question: Is there evidence that her average HC is not 14? (Use a 1% level of significance)(Type: Yes or No)
A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of women. She randomly selected 52 men and 73 women to participate in the study. Each subject was required to step up and down a 6-inch platform. The pulse of each subject was then recorded. The following results were obtained. (a) State the null and alternative hypotheses. Which of the following is correct? OC. Hgi H1 =H2i H H2 (b) Identify the P-value and state the researcher's conclusion if the level of significance was a = 0.02. What is the P-value? P.value =
The mean height of a certain kind of plant is 183 centimeters. Suppose we want to carry out a hypothesis test to see if the mean height when these plants are treated with a certain chemical differs from 183. State the null hypothesis H, and the alternative hypothesis H, that we would use for this test. p O
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 =
In a recent year, the mean weight of newborn boys in a certain country was 7.5 pounds. A doctor wants to know whether the mean weight of newborn girls differs from this. State the appropriate null and alternate hypotheses. The null hypothesis is :H0μ ▼(Choose one) .The alternate hypothesis is :H1μ ▼(Choose one) .

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