Suppose that \( \chi^2 \) follows a chi-square distribution with 20 degrees of freedom. Use the ALEKS calculator to answer the following.---(a) Compute \( P(12 \leq \chi^2 \leq 31) \). Round your answer to at least three decimal places.\[ P(12 \leq \chi^2 \leq 31) = \boxed{\ } \](b) Find \( k \) such that \( P(\chi^2 \geq k) = 0.1 \). Round your answer to at least two decimal places.\[ k = \boxed{\ } \]

Answered: Suppose that follows a chi-square…

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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Suppose P(A) = 0.42, P(B) = 0.48 and P(A and B) = 0.10. Find P(Bc | Aº) : = Question Help: Add Work Submit Question Video (round your answer to three decimal places)
Need the H0 and H1 values. Can use != for not equal to.
n 8 of 17 O Attempt 1 Suppose a biologist is studying the population of fish in freshwater lakes. He collects data on the number of different species of fish found in 20 lakes. The boxplot displays the results of the study with species of fish in intervals of 50. Create a five-number summary of the data set. Round values to the nearest 25 species. 200 250 300 350 400 450 s00 s50 600 650 700 Number of species of fish 200 min = species Q, = 300 species Incorrect 550 median = 600 species Q3 = species Incorrect Incorrect max = 700 species DELL & 7 8 y + I| く0 口 5
When a population is finite, the formula that determines the standard error of the mean needs to be adjusted. If N is the size of the population and n is the size of the sample (where n ≥ 0.05N), the standard error of the mean is shown below. The finite population correction factor is given by the expression √(N-n)/(N-1). Determine the finite population correction factor for each of the following. (a) N = 1400 and n = 1050 (b) N = 1400 and n = 140 (d) N = 1400 and n = 70 (c) N = 1400 and n = 75 (e) What happens to the finite population correction factor as the sample size n decreases but the population size N remains the same? (a) The finite population correction factor is (Round to three decimal places as needed.) (b) The finite population correction factor is (Round to three decimal places as needed.) (c) The finite population correction factor is (Round to three decimal places as needed.) (d) The finite population correction factor is (Round to three decimal places as needed.) (e)…
Suppose that scores on a particular test are normally distributed with a mean of 140 and a standard deviation of 18. What is the minimum score needed to be in the top 10% of the scores on the test? Carry your intermedlate computations to.at least four decimal places, and round your answer to one decimal place. Continue ace esc & # 24 @ 7 4 2 t y r e
In the following plot you see the rejection frequencies (defined as the frequency in which the estimator is non-zero) for 100 regressors (represented along the horizontal axis), and repeated for the OLS, Lasso and Adaptive Lasso estimators. The red dots are the estimates for the true non-zero coefficients. The black dots are the estimates of true-zero coefficients. OLS Lasso Adaptive Lasso 12- 12- 1.2- 0.8- 0.8- 0.8- 0.4- 0.4- 0.4- 0.0- 0.0- 0.0- 100 100 You can learn from the plots that: O a. The Lasso has a clear shrinkage towards zero O b. The Adaptive Lasso has better model-selection properties because it estimates more frequently the true zeros as zeros O. All of the options Od. The OLS has poor predictive performance O e. The Adaptive Lasso has better model-selection properties because it estimates more frequently the true non-zeros as non-zeros coef *8-
Harper collected data on students who make appointments to see their advisor to see how many failed to show up. The student records were divided into two groups: male (group 1) and female (group 2). A 93% confidnece interval for pi – P2 was found to be as follows: (0.03, 0.09) Interpret the endpoints of this interval in the context of this problem. Do not use the word "difference" in your answer.
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Suppose that follows a chi-square distribution with 20 degrees of freedom. Use the ALEKS calculator to answer the following. (a) Compute P(12≤x≤31). Round your answer to at least three decimal places. P(12 k) =0.1. Round your answer to at least two decimal places. k=