11:15 PM Sat Jul 23< 88 QXLesson 45-47 Week 9XMATH140 - Statistical Project #2Lecture 41-44 Week 8☆.XOTHw 10X MATH140 - Statistical...(e) Assuming that the four potential outliers of 0, 0, 8, and 20 are not recording errors, repeat thehypothesis test from part (c) (again setting up the hypothesis test and using either the criticalvalue or p-value approach), and compare your results with that obtained in (c). Did you make adifferent conclusion?40%(f) Imagine you know have to make a recommendation/conclusion to the company that hired you:Assuming that the four potential outlies are not recording errors, and looking at the two resultsabove, would you recommend using the first test with the outliers or the second test with theoutliers removed? There is no right or wrong answer here, I am interested in what you think andyour reasoning. 11:14 PM Sat Jul 23< 88 a aXLesson 45-47 Week 9aCXMATH140 - Statistical Project #2Lecture 41-44 Week 8Frequencyimagine you're hired by a beef company called "American Beef Makers" as a DataAnalyst and you're tasked with determining if annual beef consumption has increased in the UnitedStates over the ten-year period from 2011 to 2021. In 2011 the annual consumption of beef per person(per capita) was 57.5 pounds per year.776520RITTo determine if the mean annual beef consumption has increased over the ten-year period from 2011 to2021, a random sample of 40 people was taken and their annual beef consumption from 2021 wasrecorded. The results are shown below, rounded to the nearest pound. Mean 58.41 101 sig 0.055754687956025-1510-50-035049515656786372(a) Obtain a histogram of the data. Does the data appear to be normally distributed?not202OX40062normally746161605637T11607677676762895675Hw 10Histogram (Frequency Diagram)Anval beef consuption23distributed.The distribution of data is negatively skewed.So data is80697375628712047(b) Obtain a boxplot of the data. Are their any outliers in the data?Outliers: 0, 0, 8, 201X MATH140 - Statistical...10040%

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Answered: (e) Assuming that the four potential…

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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At a nearby college, there is a school-sponsored website that matches people looking for roommates. According to the school's reports, 36% of students will find a match their first time using the site. A writer for the school newspaper tests this claim by choosing a random sample of 160 students who visited the site looking for a roommate. Of the students surveyed, 45 said they found a match their first time using the site. Complete the parts below to perform a hypothesis test to see if there is enough evidence, at the 0.10 level of significance, to reject the claim that the proportion, p, of all students who will find a match their first time using the site is 36%.
a) Determine 99% confidence limits for beta(symbol couldn't write) (the slope of the regression line) and alpha (the intercept of the regression line). b) 34. Determine 99% prediction limits for Y when X = 41.7 and 95% prediction limits for Y when X = 61.5. c) draw a scatter plot.
A buyer for a grocery chain inspects large truckloads of apples to determine the proportion p of apples in the shipment that are rotten. She will only accept the shipment if there is convincing evidence that this proportion is less than 0.06. She selects a sample of 200 apples near the tailgate from the over %3D 20,000 apples on the truck to test the hypotheses Ho: p = 0.06, Ha: p < 0.06. Which of the following conditions for inference have not been met in this situation? The data are a random sample from the population of interest. np 2 10 and n(1 - p) 210 More than one condition is violated. The sample size is less than 10% of the population size. The population distribution is approximately Normal.
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You wish to test the following claim (HaHa) at a significance level of α=0.001α=0.001. Ho:p1=p2Ho:p1=p2 Ha:p1<p2Ha:p1<p2You obtain 47 successes in a sample of size n1=208n1=208 from the first population. You obtain 182 successes in a sample of size n2=532n2=532 from the second population. For this test, you should NOT use the continuity correction, and you should use the normal distribution as an approximation for the binomial distribution.What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value = The p-value is... less than (or equal to) αα greater than αα This test statistic leads to a decision to... reject the null accept the null fail to reject the null As such, the final conclusion is that... There is sufficient evidence to warrant rejection of the claim that the first population proportion is less than the…
You wish to test the following claim (HaHa) at a significance level of α=0.02α=0.02. Ho:p1−p2=0Ho:p1-p2=0 Ha:p1−p2>0Ha:p1-p2>0You obtain 199 successes in a sample of size 376 from the first population. You obtain 330 successes in a sample of size 744 from the second population.What is the critical value for this test? (Report answer accurate to three decimal places.)critical value =
10. The t test for two independent samples - One-tailed example using tables Aa Aa Most engaged couples expect or at least hope that they will have high levels of marital satisfaction. However, because 54% of first marriages end in divorce, social scientists have begun investigating influences on marital satisfaction. [Data source: This data was obtained from National Center for Health Statistics.] Suppose a social psychologist sets out to look at the role of economic hardship in relationship longevity. She decides to measure marital satisfaction in a group of couples living above the poverty level and a group of couples living below the poverty level. She chooses the Marital Satisfaction Inventory, because it refers to "partner" and "relationship" rather than "spouse" and "marriage," which makes it useful for research with both traditional and nontraditional couples. Higher scores on the Marital Satisfaction Inventory indicate greater satisfaction. There is one score per couple.…
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