29An ecologist selected a random sample of 30 prairiedogs from a colony and found that themean mass of the prairie dogs in the sample was0.94 kilograms (kg) with an associated margin oferror of 0.12 kg. Which of the following is the bestinterpretation of the ecologist's findings?A) All prairie dogs in the sample have a massbetween 0.82 kg and 1.06 kg.B) Most prairie dogs in the colony have a massbetween 0.82 kg and 1.06 kg.C) Any mass between 0.82 kg and 1.06 kg is aplausible value for the mean mass of the prairiedogs in the sample.D) Any mass between 0.82 kg and 1.06 kg is aplausible value for the mean mass of the prairiedogs in the colony.

Answered: Image /qna-images/answer/b8fb85e0-2166-49ec-8b74-fb36f6637855.jpg

Answered: 29 An ecologist selected a random…

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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Epistasis is a phenomenon in which one gene controls the expression of another. In one case, a dihybrid cross should yield a 9:3:4 ratio. You collect the following data on mice: black coat: 138 brown coat: 46 white coat: 60 Is there any reason to doubt the ratio of 9 black : 3 brown : 4 white?
Find the sample standard deviation
The table below displays the coronary artery disease data. The response, presence of coronary artery disease (CA), is dichotomous. The explanatory variables are sex and electrocardiogram (ECG) measurement. Sex ECG Disease No Disease Total Female Low 4 11 15 Female High 10 18 Male Low 18 Male High 21 27 Calculate the Mantel-Haenszel's estimate of the common odd-ratio value between ECG and coronary artery disease status. Round the value to the second decimal place. For example, 2.3414 would be 2.34.
b.
3) For population standard deviation = 3 and a population mean = 10, find the z scores for the following x: A) x = 11 B) x = 8 C) x = 19 D) x = 2
A boat capsized and sank in a lake. Based on an assumption of a mean weight of 133 Ib, the boat was rated to carry 70 passengers (so the load limit was 9,310 Ib). After the boat sank, the assumed mean weight for similar boats was changed from 133 lb to 174 lb. Complete parts a and b below. a. Assume that a similar boat is loaded with 70 passengers, and assume that the weights of people are normally distributed with mean of 181.1 Ib and a standard deviation of 38.6 lb. Find the probability that the boat is overloaded because the 70 passengers have mean weight greater than 133 lb The probability isO: (Round to four decimal places as needed.) b. The boat was later rated to carry only 17 passengers, and the load limit was changed to 2,958 Ib. Find the probability that the boat is overloaded because the mean weight of the passengers is greater than 174 (so that their total weight is greater than the maximum capacity of 2,958 Ib). The probability is. (Round to four decimal places as needed.)…
A study was conducted at a local college to analyze the average cumulative GPAs of students who graduated last year. In each of the following situations, identify the population, Statistic, Parameter, Variable, Data and the Sample. a) all students who attended the college last year b) the cumulative GPA of one student who graduated from the college last year c) 3.65, 2.80, 1.50, 3.90 d) a group of students who graduated from the college last year, randomly selected e) the average cumulative GPA of students who graduated from the college last year f) all students who graduated from the college last year g) the average cumulative GPA of students in the study who graduated from the college last year
I need help for figuring out how to explain parts a and b.
3.) A population has a mean of 300 and a variance of 80. If we get 160 samples from this population, what wili be the mean and standard deviation of the sampling distribution of sample mean? A.) Hg = 300 and og =0.53 B.) µg = 300 and og =0.71 C.) µg = 300 and og =6.32 D.) µg = 300 and og =80 %3D %3D
Allison's soccer penalty kick speeds vary uniformly between 57 and 78 miles per hour. Round answers to four decimal places. a) What is Allison's average penalty kick speed? b) What proportion of Allison's penalty kicks are faster than 70 miles per hour? [ c) What is the 3rd quartile of the distribution of Allison's penalty kick speeds? d) What is the variance of Allison's penalty kick speeds? e) What is the specific speed that is exceeded by only 11% of Allison's penalty kick speeds? 1) What is the probability that the speed of one of Allison's randomly selected penalty kicks is between 62 and 66 miles per hour?
In a random sample of 765 adults in the United States, 122 of them said if they had to cover a $400 emergency expense, they would need to use a credit card and pay it back over time. a. what is the parameter being estimated b. what is the sample proportion (must show work)
It costs more to produce defective items—since they must be scrapped or reworked—than it does to produce non-defective items. This simple fact suggests that manufacturers should ensure the quality of their products by perfecting their production processes instead of depending on inspection of finished products (Deming, 1986). In order to better understand a particular metal stamping process, a manufacturer wishes to estimate the mean length of items produced by the process during the past 24 hours. a. How many parts should be sampled in order to estimate the population mean to within .2 millimeter (mm) with 95% confidence? Previous studies of this machine have indicated that the standard deviation of lengths produced by the stamping operation is about 2 mm. b. Time permits the use of a sample size no larger than 225. If a 95% confidence interval for m is constructed with n = 225, will it be wider or narrower than would have been obtained using the sample size determined in part a?…

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