Unit 7 Assessment 3rd Period Include your name on your handwritten work 1. You are the quality assurance manager of a large producer of apples. Before selling a harvest of your apples to grocery stores, you need to provide them with adequate information so you can agree on a sale price. Consider your upcoming harvest of Gala apples. In the past, you have sold your Galas advertising them with a mean weight of 140 grams (g) per apple. Recent dry weather has given you concern that the mean weight of the apples may be less than this. As usual, you take a random sample of Galas from the upcoming harvest, weigh them, and perform a hypothesis test at the a = 0.05 significance level to evaluate your concern. Your random sample of 32 Galas has a mean weight is 138 grams with a standard deviation of 9 grams. Do you have convincing evidence that the mean weight of Galas in the upcoming harvest will be less than 140 grams? Clearly define all of your variables, write your hypothesis statements, check your conditions for inference, and show all of your work.

Unit 7 Assessment 3rd Period Include your name on your handwritten work 1. You are the quality assurance manager of a large producer of apples. Before selling a harvest of your apples to grocery stores, you need to provide them with adequate information so you can agree on a sale price. Consider your upcoming harvest of Gala apples. In the past, you have sold your Galas advertising them with a mean weight of 140 grams (g) per apple. Recent dry weather has given you concern that the mean weight of the apples may be less than this. As usual, you take a random sample of Galas from the upcoming harvest, weigh them, and perform a hypothesis test at the a = 0.05 significance level to evaluate your concern. Your random sample of 32 Galas has a mean weight is 138 grams with a standard deviation of 9 grams. Do you have convincing evidence that the mean weight of Galas in the upcoming harvest will be less than 140 grams? Clearly define all of your variables, write your hypothesis statements, check your conditions for inference, and show all of your work.

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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This requires manual calculation as well as analyzing data using the statistical package R. The detailed rubric for this may be located in the guide as well as the document. You will be working with the KBP dataset provided in the course space. You will also need to use the document, Questions for KBP Survey. This document has selected questions as they appeared on the questionnaire that was administered to collect the data for this project. 1. Classify the variables by the levels of measurement used. Explain your choice of the levels of measurement. 2. Using R, generate a graph to represent the sample by alcohol usage in the past 4 weeks. What can you say about alcohol usage among this sample of young persons? 3. Using R, calculate the proportion of individuals by relationship status and report in a relative frequency distribution table. Respondents # Age of Respondent Sex of Respondents Relationship Status Age at first Sexual Encounter Practice Religion number of persons use…
Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a particular landscaping proposal is based on the number of plantings of trees, shrubs, and so on to be used for the project. For cost-estimating purposes, managers use two hours of labor time for the planting of a medium-sized tree. Actual times from a sample of 10 plantings during the past month follow (times in hours). B, C, and D
Please help by providing detailed workings. Answers to a minimum of 6 d.p. Thanks
The pathogen Phytophthora capsici causes bell peppers to wilt and die. Because belI peppers are an important commercial crop, this disease has undergone a great deal of agricultural research. It is thought that too much water aids the spread of the pathogen. Two fields are under study. The first step in the research project is to compare the mean soil water content for the two fields. Units are percentage of water by volume of soil. Field A samples, x: 10.0 10.7 15.5 10.4 9.9 10.0 16.6 15.1 15.2 13.8 14.1 11.4 11.5 11.0 Field B samples, x,: 8.3 8.5 8.4 7.3 8.0 7.1 13.9 12.2 13.4 11.3 12.6 12.6 12.7 12.4 11.3 12.5 A USE SALT Use a calculator to calculate x,, s,,x,, and s,. (Round your answers to four decimal places.) x, (a) Assuming the distribution of soil water content in each field is mound-shaped and symmetric, use a 5% level of significance to test the claim that field A has, on average, a higher soil water content than field B. (1) What is the level of significance?
The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first determine the percentage of adults who have heard of the brand. How many adults must he survey in order to be 95% confident that his estimate is within five percentage points of the true population percentage? Complete parts (a) through (c) below. Question content area bottom Part 1 a) Assume that nothing is known about the percentage of adults who have heard of the brand. n=enter your response here (Round up to the nearest integer.)
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The data used is from college campuses. The variables used in the analysis below include: crime, total campus crime; enroll, total enrollment; police, employed officers. Use the estimated OLS models to answer the questions below: Model A: In(crime) = -6.631 + 1.270ln(enroll), (1.034) (.110) .5804 n = 97; R² = Model B: In(crime) = -4.794+.923ln(enroll) +.516ln(police), (.144) (.149) (1.112) n = 97; R² = .632 Using Model A, test the null hypothesis that elasticity of crime with respect to enrollment is unit elastic, i.e. equal to one (against a two-sided alternative). What is the conclusion of your test using a significance level of .01? Reject Fail to reject O Not enough information.