It is reported in USA Today that the average flight cost nationwide is $595.711. Youhave never paid close to that amount and you want to perform a hypothesis test thatthe true average is actually greater than $595.711. The hypotheses for this situationare as follows: Null Hypothesis: µ < 595.711, Alternative Hypothesis: µ > 595.711. Arandom sample of 30 flights shows an average cost of $584.559 with a standarddeviation of $59.3656. What is the test statistic and p-value for this test?1) Test Statistic: 1.029, P-Value: 0.1562) Test Statistic: -1.029, P-Value: 0.8443)Test Statistic: -1.029, P-Value: 0.1564) Test Statistic: -1.029, P-Value: 1.6885) Test Statistic: 1.029, P-Value: 0.844

Answered: It is reported in USA Today that the…

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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Based on historical data in Oxnard college, we believe that 30% of freshmen do not visit their counselors regularly. For this year, you would like to obtain a new sample to estimate the proportiton of freshmen who do not visit their counselors regularly. You would like to be 99% confident that your estimate is within 1% of the true population proportion. How large of a sample size is required? Do not round mid-calculation.
Listed below are amounts of court income and salaries paid to the town justices. All amounts are in thousands of dollars. Construct a scatterplot, find the value of the linear correlation coefficient r, and find the P-value using α=0.05. Is there sufficient evidence to conclude that there is a linear correlation between court incomes and justice salaries? Based on the results, does it appear that justices might profit by levying larger fines? Court Income Justice Salarv 65.0 403.0 1567.01132.0 274.0 254.0 111.0 153.0 33.0 60 24 25 29 44 92 58 45 19 AJustice Salary 100- 504 AJustice Salary 100- 50 +++++ toot THE T ...... Q AJustice Salary 100- 50 . HI AJustice Salary 100- 50 =677 e 0
Approximately 58% of all people are able to wink with both eyes. Is this percent different for people who wear glasses? A researcher tests 319 people who wear glasses and found that 204 could wink with both eyes. What can be concluded at the αα = 0.05 level of significance? For this study, we should use Select an answer z-test for the difference between two population proportions t-test for a population mean z-test for a population proportion t-test for the difference between two dependent population means t-test for the difference between two independent population means The null and alternative hypotheses would be: H0:H0: Select an answer μd p1 p μ1 μ Select an answer ≥ = ≠ ≤ H1:H1: Select an answer μ μ1 p p1 μd Select an answer < ≠ > = The test statistic ? z t = (round to 3 decimal places) The p-value = (round to 4 decimal places) The p-value is ? > ≤ αα. Based on this, we should Select an answer accept reject fail to reject the null hypothesis. Explain…
Professor Nord stated that the mean score on the final exam from all the years he has been teaching is a 79%. Colby was in his most recent class, and his class’s mean score on the final exam was 82%. Colby decided to run a hypothesis test to determine if the mean score of his class was significantly greater than the mean score of the population. α = .01. What is the mean score of the population? What is the mean score of the sample? Is this test one-tailed or two-tailed? Why?
i- Write two main differences between Forecasting and Time-Series Analysis (TSA)?ii- Is forecasting technique more accurate than TSA? Justify your answer.iii- If you were to go buy a car and are provided with the following data sets (standarddeviation and Variance). Which set of data would help you make a better decision?And why?iv- Find the p-value if Z < -.90, alpha = 0.05 (one-tail, lower tail)v- Find P-value in a left tailed test if the test statistics is z = -1.87
Based on historical data in Oxnard college, we believe that 30% of freshmen do not visit their counselors regularly. For this year, you would like to obtain a new sample to estimate the proportiton of freshmen who do not visit their counselors regularly. You would like to be 99% confident that your estimate is within 5% of the true population proportion. How large of a sample size is required? Do not round mid-calculation.
What is the odds ratio for a study with a logistic regression coefficient -0.2524? 0.78 1.00 -0.78 -2524
Based on historical data in Oxnard college, we believe that 36% of freshmen do not visit their counselors regularly. For this year, you would like to obtain a new sample to estimate the proportiton of freshmen who do not visit their counselors regularly. You would like to be 90% confident that your estimate is within 1% of the true population proportion. How large of a sample size is required? Do not round mid-calculation.n =
true or false? Suppose a sample size of 87 was used to conduct a right tailed hypothesis test for a single population mean. The null hypothesis was H0: μμ = 45 and the sample mean was 50 and the p-value was 0.03. Then there is a 3% chance that 87 randomly selected individuals from a population with a mean of 45 and the same standard deviation would have a sample mean greater than 50.
If a treatment is expected to decrease scores in a population with µ= 30, then the alternative hypothesis is µ ≤ 30. True or false?

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