dependent in the following contingency table. A 4 6. 75 68 B 21 22 Give all answers rounded to 3 places after the decimal point, if necessary. (a) Enter the expected frequencies below: (b) What is the chi-square test-statistic for this data? Test Statistic: X (c) What is the critical value for this test of independence when using a significance level of a= 0.01? Critical Value: x (d) What is the correct conclusion of this hypothesis test at the 0.01 significance level? There is sufficient evidence to support the claim that the row and column variables are dependent. There is sufficient evidence to warrant rejection of the claim that the row and column variables are dependent. There is not sufficient evidence to warrant rejection of the claim that the row and column variables are dependent. There is not sufficient evidence to support the claim that the row and column variables are dependent. Remember to give all answers rounded to 3 places after the decimal point, if necessary. Submit Question

dependent in the following contingency table. A 4 6. 75 68 B 21 22 Give all answers rounded to 3 places after the decimal point, if necessary. (a) Enter the expected frequencies below: (b) What is the chi-square test-statistic for this data? Test Statistic: X (c) What is the critical value for this test of independence when using a significance level of a= 0.01? Critical Value: x (d) What is the correct conclusion of this hypothesis test at the 0.01 significance level? There is sufficient evidence to support the claim that the row and column variables are dependent. There is sufficient evidence to warrant rejection of the claim that the row and column variables are dependent. There is not sufficient evidence to warrant rejection of the claim that the row and column variables are dependent. There is not sufficient evidence to support the claim that the row and column variables are dependent. Remember to give all answers rounded to 3 places after the decimal point, if necessary. Submit Question

Name: %24# 3个A.You are conducting a test of the claim that the row variable
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Description: %24# 3个A.You are conducting a test of the claim that the row variable and the column variable aredependent in the following contingency table.6.75468B 2122Give all answers rounded to 3 places after the decimal point, if necessary.(a) Enter the expec

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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Exam grades: Scores on a statistics final in a large class were normally distributed with a mean of 72 and a standard deviation of 8. Use the T1-84 PLUS calculator to answer the following. Round the answers to at least two decimals. (a) Find the 32nd percentile of the scores.. (b) Find the 67 percentile of the scores. (c) The instructor wants to give an A to the students whose scores were in the top 8% of the class. What is the miniìmum score needed to get an A? (d) Between what two values are the middle 70% of the scores? (Enter the smaller number in the first box.)
A population consists of numbers with mean 205 and standard deviation 25. Match the following: Group of answer choices z-score associated within a value of 210 value whose z-score is -1.6 If the population values are approximately bell-shaped, then the value __________ represents the approximate 16th percentile of the numbers knowing nothing of the shape of the population, I can conclude that at least __________% of the numbers are between…
Tree heights: Cherry trees in a certain orchard have heights that are normally distributed with mean u = 114 inches and standard deviation a = 15 inches. Use the TI-84 PLUS calculator to answer the following. Round the answers to at least two decimals. (a) Find the 27" percentile of the tree heights. (b) Find the 85 percentile of the tree heights. (c) Find the third quartile of the tree heights. (d) An agricultural scientist wants to study the tallest 2% of the trees to determine whether they have a certain gene that allows them to grow taller. To do this, she needs to study all the trees above a certain height. What height is this?
This C The weight of an organ in adult males has a bell-shaped distribution with a mean of 310 grams and a standard deviation of 40 grams. Use the empirical rule to determine the folowing (a) About 99.7% of organs will be between what weights? (b) What percentage of organs weighs between 230 grams and 390 grams? (c) What percentage of organs weighs less than 230 grams or more than 390 grams? (d) What percentage of organs weighs between 270 grams and 430 grams? (a) and grams (Use ascending order.) (b)% (Type an integer or a decimal.) (c) % (Type an integer or a decimal.) (d) % (Type an integer or decimal rounded to two decimal places as needed.) Enter your answer in each of the answer boxes. e Type here to search 近

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K Light bulb lifetime. Find the mean and median for the data in the following table. Interval Frequency 799.5-899.5 2 Life (Hours) of 50 Randomly Selected Light Bulbs 899.5-999.5 999.5-1,099.5 8 20 The mean is 1,099.5-1,199.5 1,199.5-1,299.5 10 10
What are you drinking? Environmental Protection Agency standards require that the amount of lead in drinking water be less than 15 micrograms per liter. Eleven samples of water from a particular source have the following concentrations, in units of micrograms per liter. Assume the population standard deviation is σ=5. If appropriate, perform a hypothesis test to determine whether you can conclude that the mean concentration of lead meets the EPA standards. Use the α=0.05 level of significance and the P-value method with the TI-84 calculator. 11.9 14.9 14.8 16.7 8.9 12.9 8.8 13.9 17.9 9.9 16.1 Explain why it is necessary to check that the population is approximately normal before performing a hypothesis test. It is necessary to check that the population is approximately normal because (the sample size is small n≤30 or there might be outliers or the distribution might be skewed .... State the appropriate null and…
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People were polled on how many books they read the previous year. Initial survey results indicate that s = 11.9 books. Complete parts (a) through (d) below. A Click the icon to view a partial table of critical values. (a) How many subjects are needed to estimate the mean number of books read the previous year within six books with 95% confidence? This 95% confidence level requires subjects. (Round up to the nearest subject.) (b) How many subjects are needed to estimate the mean number of books read the previous year within three books with 95% confidence? This 95% confidence level requires subjects. (Round up to the nearest subject.) (c) What effect does doubling the required accuracy have on the sample size? O A. Doubling the required accuracy nearly halves the sample size. O B. Doubling the required accuracy nearly doubles the sample size. O C. Doubling the required accuracy nearly quarters the sample size. O D. Doubling the required accuracy nearly quadruples the sample size. (d)…
Mean (E(x)) = np St. dev=Given the number of trials and the probability of success, find the mean, standard deviation1.n =12, p = 0.22. n = 20, p = 0.5In addition, find the indicated probabilities3. n =11, p = 0.05, find P(3 failures)4. n = 6, p = 0. 35, find P(at least 3 successes)5. A basketball player has a 60% chance of making each free throw. What is the probability that the player makes exactly three out of six free throws?6. The manufacturing sector contributes 17% of Canadas gross domestic product. A customer orders 50 components from a factory that has a 99% quality production rate (99% of the products are defect-free). Find the probability that:a) none of the components in the order are defectiveb) there is at least one defective product in the order.c) There are at least two defective products in the order.d) Expected number of defective parts.7. Approximately 3% of the eggs in a store are cracked. If you buy two dozen eggs, what is the probability thata) none of your eggs…
Application Exercise: Dr. Butler is interested in the preference for dog breeds among college students. She collected the observed frequencies below and wants to know if the breeds are equally preferred. What can be concluded with an a of 0.05? Irish Setter Golden Retriever Papillon Great Dane 101 94 135 97 L What is the appropriate test statistic? -Select Compute the statistic selected in : M Obtain/compute the appropriate values to make a decision about Hg. Critical Value = | J: Test Statistic = Decision: -Select- N Compute the corresponding effect size(s) and indicate magnitude(s). If not appropriate, input and/or select "na" below. Effect Size = | ]: Magnitude: -Select-- Make an interpretation based on the results. O There is a significant relationship between dog breeds and college students. There is a significant dog breed preference among college students. O Dog breeds are equally preferred among college students.