2. A random sample of students at CLSU were classified according to the college in which they were enrolled and also according to whether they graduated from a private or public high school. Test the null hypoth- esis that the college in which each student is enrolled is independent of where they took their high school. Use a = 0.01.

2. A random sample of students at CLSU were classified according to the college in which they were enrolled and also according to whether they graduated from a private or public high school. Test the null hypoth- esis that the college in which each student is enrolled is independent of where they took their high school. Use a = 0.01.

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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USE 3 DECIMAL A producer claims that his potato chips weight has a normal distribution at least 150 grams. The manager tries to test day shift production weight is heavier that night shift. Because of the complaints of the customers, quality control department select randomly 19 bags from the day shift and find the mean as 146 grams and variance 9 grams and randomly selected 21 bags from the night shift and find the mean as 148 grams and variance 8 grams. If manager want to test the claim as night shift mean weight of the product is greater than that of day shift at 1% level of significance. Calculate the test statistics. (H1: m night shift > m day shift).
Choose the correct answer, give brief explaination I make it as one question, because its have simple explanation and its related
Quèstion 17 In a single-factor ANOVA problem involving 4 populations, the sample sizes are 7,5,6, and 6. If SSTotal= 65.27 and SST O 3.75 2.09 7.83 0.56 6.67
A test statistic for one of the tests in this unit is given, along with information about degrees of freedom. Give the p-value and indicate whether the results are significant at the 5% level. An analysis of variance test with F-statistic 8.71 and df -numerator 3 and df -denominator = 17 Round your answer to four decimal places. p-value
True or false: The point estimate for the population mean of an xdistribution is computed from a random sample of the xdistribution.
true if the statement is absolutely true, otherwise answer false if the statement is either true or false when sampling from normal distribution, the sample mean is the most efficient estimation of the population mean
Illustrate Exact Sampling Distributions When the Errors Are Normally Distributed?
Similarities and differences of Sample Standard Deviation and Sample Mean.
Explain sampling distributions and how does it affect theparameters and random variables of acharacteristic of sample and population.
Determine Range sample standard deviation sample variance what does the results tell us?
Excessive fertilizer and surface runoff can result in heavy phosphorus concentrations and reduced oxygen levels in lakes and ponds. This can lead to die-off of insects, fish, an increase in algae, and overall reduced health of the ecosystem. With the increase in algae, you are concerned about the amount of dissolved oxygen (DO). You measure the average DO levels in randomly sampled lakes in two different types (urban and rural) at the same time of year. Conduct a hypothesis test at 5% level of significance. Is there evidence to suggest that the average DO levels are significantly higher in lakes found in rural areas when compared to lakes in more urban areas? Use the table below. What is the test statistic?