Are Older men Shorter than youngermen? According to a nationalmeanreport thetheight arusmen IS 69.4 Inches. In a sampleBetween ages 60 and300 men69 Themean theight was I 68.7Inches. Public Health OfficialsWant to determine whether themean theight 14 108 For alder menis less than the mean HeightAll adult menofpopulation standard deviation isUse a=0.65 level of3.42Signifigance, and the pratue

Given information: μ=69.4x¯=68.7n=300σ=3.42α=0.05

Answered: Are Older men Shorter than younger men?…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The heights of adult men in America are normally distributed, with a mean of 69.7 inches and a standard deviation of 2.64 inches. The heights of adult women in America are also normally distributed, but with a mean of 64.2 inches and a standard deviation of 2.53 inches. What percentage of men are SHORTER than 70 inches? Round to nearest tenth of a percent. What percentage of women are TALLER than 59 inches? Round to nearest tenth of a percent. Submit Question 96
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A mountain climber plans to buy some ropes to use as a lifeline. Which of the following would be a better one? Rope A: with a mean breaking strength of 500 LBS and standard deviation of 100 LBS or Rope B: with a mean breaking strength of 500 LBS and standard deviation of 10 LBS Explain
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A survey is conducted on 700 Californians older than 30 years of age. The study wants to obtain inference on the relationship between years of education and yearly income in dollars. The response variable is income in dollars and the explanatory variable is years of education. A simple linear regression model is fit, and the output from R is below: Im(formula = Income ~ Education, data = CA) Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 25200.25 1488.94 16.93 3.08e-10 *** Education 2905.35 112.61 25.80 1.49e-12 *** Residual standard error: 32400 on 698 degrees of freedom Multiple R-squared: 0.7602
A criminologist rode along with patrol officers for several weeks and recorded the number of minutes police officers spent interviewing witness at a variety of crime scenes. Using data collected on a group of 35 patrol officers, she observes an average interviewing time of 307 minutes. Assume that the population standard deviation a is estimated to be 83 minutes. What is the point estimate for the population mean, p? minutes Submit Question
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The mean height of students in Negron’s Fall statistics classes is 65.6 inches with a standard deviation 3.89 inches. Sketch the distribution of heights. Calculate the standardized score for a student 59 inches tall. Calculate the standardized score for a student 76 inches tall. Explain which measure is more unusual and why.
A group of adult males has foot lengths with a mean of 28.23 cm and a standard deviation of 1.27 cm. Use the range rule of thumb to identify the limits separating values that are significantly low or significantly high. Is the adult male foot length of 25.5 cm significantly low or significantly high? Explain. Significantly low values are Significantly high values are Select the correct choice below and fill in the answer box(es) to complete your choice.

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