3M - MS-DRG Assignment

If a Type I error is made, what conclusion will be drawn regarding the mean breaking strength?

Chi-square tests are common in genetics. A gene called ACTN3 encodes a protein which functions in fast-twitch muscles. People have different variants of this gene, classified as RR, RX, or XX. Computer output is shown for testing whether the proportions in these categories are 0.25, 0.5, and 0.25, respectively. The observed counts come from a study¹ conducted in Australia. Chi-Square Goodness-of-Fit Test for Observed Counts (a) What is the sample size? n = i Observed = i Expected = i Degree of Freedom = i Test Contribution Category Observed Proportion Expected to Chi-Sq RR 130 0.25 109 (e) What is the p-value? RX p-value = XX N (d) What are the degrees of freedom for the test? i V 226 80 436 (c) Which variant contributes the most to the chi-square statistic? DF For this variant, is the observed value greater than or less than expected? 2 (b) What is the observed number of people with the variant RR for this gene? What is the expected number of people in this group under Ho? Do the…

Coom O Launch Meeting Zoom O Launch Meeting Zoom Check Your Understanding Die x 711f0308264d0cbd87b76a#screenldx=D2 ng High intracranial pressure (inside the skull) typically is a a. How many false positives were there among these 189 people? Explain the meaning of a false positive for the person tested. result of an injury to the head and can be very dangerous. A screening test for high intracranial pressure was proposed many years ago, based on the data in the following observations. This simple and non-invasive test involves observing the retinal vein to see if it is pulsating. Pulsation is normal and so would be considered a negative test result. Pulsation Absent Pulsation Present Total (Positive Test) (Negative Test) High Intracranial Pressure (Condition Present) Normal Intracranial Pressure b. How many false negatives were there? Explain the meaning of a false negative for the person tested. 43 43 (Condition Absent) 18 128 146 Total 61 128 189 Sources: B.E Levin, "The Clinical…

24) Which data set A or B has the best precision? Support your answer with the correct statistic and show it's formula. use Excel to calculate and submit an electronic copy with your exam on Bblearn. Set A (in mL) 3.11,3.11,3.13, 3.11, 3.12 Set B (in mL) 3.09, 3.11, 3.11,3.11,3.12

A new process is run on consecutive mornings for five days and the yields and other performance data are recorded. When the process goes into full- scale operation, it will be run continuously 24 hours a day. Is it reasonable to consider the yield and performance data from the five morning runs a simple random sample?( don't hand writing solution)

What is a T-Test? How is it applied to a Single Population Data Set?

Scholarship Application for 2022- x Bb Week 4 (Gathering Data) -20222 x /webapps/assessment/take/launch.jsp?course_assessment_id= 442208_1&course_id=_3645813_1&content_id=_8105217_1&step=Dnull 它 ☆ * Question Completion Status: Judging Sampling Design. In each of the following situations, describe negative aspects of the study design. a) A questionnaire is mailed to a simple random sample of 500 household addresses in a city. Ten are returned as bad addresses, 63 are returned completed, and the rest are not returned. The research analyzed the 63 cases and reports that they represent a "simple random sample of city households" (3 points) b) A newspaper asks readers to vote at its Internet site to determine whether they believe government funding for health-related programs should be cut. Based on 1434 votes, the newspaper reports that 93% of the city's residents believe that health-related programs should be cut (3 points) For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). 3 (12pt)…

Do the data indicate a significant change in grade distribution? Test at the .05 level of significance. Use Chi-square

The Data The dataset "energy" is a random sample of 56 cases from “Existing Buildings Energy Performance Ordinance Report” from the City of San Francisco Open Data Portal. There are 2,629 cases in the dataset. Citation: SFEBO Help Desk.(Last updated 11/13/2020). Existing Buildings Energy Performance Ordinance Report [data file]. Provided by SF Environment. (Retrieved 11/29/2020). https://data.sfgov.org/Energy-and-Environment/Existing-Buildings-Energy-Performance-Ordinance-Re/j2j3-acqj There are 57 cases. Each case is a building in San Francisco that must be benchmarked using Energy Star Portfolio Manager annually. There are 6 variables: parcel - the parcel number building - the building name postal_code - the postal code year_built - the year the building was built energy_score19 - the ENERGY STAR score for 2019; 1 - 100, where 50 is the national median score, and 100 is best energy performance. energy_score18 - the ENERGY STAR score for 2018 energy.csv download…

A special bumper was installed on selected vehicles in a large fleet. The dollar cost of body repairs was recorded for all vehicles that were involved in accidents over a 1-year period. Those with the special bumper are the test group and the other vehicles are the control group, shown below. Each "repair incident" is defined as an invoice (which might include more than one separate type of damage).  Statistic Test Group Control Group   Mean Damage X¯¯¯1X¯1 = $ 1,077   X¯¯¯2X¯2 = $ 1,800   Sample Std. Dev. s1 = $ 693   s2 = $ 814   Repair Incidents n1 =   16   n2 =   13      Source: Unpublished study by Thomas W. Lauer and Floyd G. Willoughby. (a) Construct a 90 percent confidence interval for the true difference of the means assuming equal variances. (Round your final answers to 3 decimal places. Negative values should be indicated by a minus sign.) The 90% confidence interval is from  to  (b) Repeat part (a), using the assumption of unequal variances with Welch's…

A special bumper was installed on selected vehicles in a large fleet. The dollar cost of body repairs was recorded for all vehicles that were involved in accidents over a 1-year period. Those with the special bumper are the test group and the other vehicles are the control group, shown below. Each "repair incident" is defined as an invoice (which might include more than one separate type of damage).  Statistic Test Group Control Group   Mean Damage X¯¯¯1X¯1 = $ 1,153   X¯¯¯2X¯2 = $ 1,751   Sample Std. Dev. s1 = $ 663   s2 = $ 820   Repair Incidents n1 =   16   n2 =   14      Source: Unpublished study by Thomas W. Lauer and Floyd G. Willoughby. (a) Construct a 99 percent confidence interval for the true difference of the means assuming equal variances. (Round your final answers to 3 decimal places. Negative values should be indicated by a minus sign.) The 99% confidence interval is from  to  (b) Repeat part (a), using the assumption of unequal variances with Welch's…

A special bumper was installed on selected vehicles in a large fleet. The dollar cost of body repairs was recorded for all vehicles that were involved in accidents over a 1-year period. Those with the special bumper are the test group and the other vehicles are the control group, shown below. Each "repair incident" is defined as an invoice (which might include more than one separate type of damage).  Statistic Test Group Control Group Mean Damage x¯1x¯1 = $ 1,101 x¯2x¯2 = $ 1,766 Sample Standard Deviation s1 = $   696 s2 =   $ 838 Repair Incidents n1 =      12 n2 =       9  (a) Construct a 90 percent confidence interval for the true difference of the means assuming equal variances. (Round answers to 3 decimal places. Negative values should be indicated by a minus sign.) (b) Repeat part (a), using the assumption of unequal variances with Welch's formula for d.f. (Round answers to 2 decimal places. Negative values should be indicated by a minus sign.) (d) Construct separate…

help

Statistical Laboratory  Link of dataset: https://www.kaggle.com/datasets/johnharshith/world-happiness-report-2021-worldwide-mortality Country name Population 2020 Population 2019 United States 331002647 328239523 Egypt 102334403 100388073 Morocco 36910558 36471769 Lebanon 6825442 6855713 Saudi Arabia 34813867 34268528 Jordan 10203140 10101694 Syria 17500657 17070135 Turkey 84339067 83429615 Pakistan 220892331 216565318 Indonesia 273523621 270625568 Bangladesh 164689383 163046161 United Kingdom 67886004 66834405 France 65273512 67059887 Germany 83783945 83132799 Netherlands 17134873 17332850 Belgium 11589616 11484055 Spain 46754783 47076781 Italy 60461828 60297396 Poland 37846605 37970874 Hungary 9660350 9769949 Czech Republic 10708982 10669709 Romania 19237682 19356544 Sweden 10099270 10285453 Greece 10423056 10716322 Denmark 5792203 5818553 Iran 83992953 82913906 Hong Kong S.A.R. of China 7496988 7451000 Singapore 5850343…

ce Assignment се Gradebook ORION Downloadable eTextbook nent FULL SCREEN PRINTER VERSION ( BACK Chapter 6, Section 2-CI, Exercise 109 What Influences the Sample Size Needed? In this exercise, we examine the effect of the margin of error on determining the sample size needed. Find the sample size needed to give, with 99% confidence, a margin of error within +6. Within +4. Within ±1. Assume that we use o = 25 as our estimate of the standard deviation In each case. Round your answers up to the nearest integer. ME = 6 n = ME = 4: n = ME = 1: n= Click If you would like to Show Work for this question: Open Show Work By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor. Question Attempts: 0 of 15 used SUBMIT ANSWER SAVE FOR LATER Earn Maximum Points available only if you answer this question correctly in your first attempt. % 70 nent 1 Privacy Policy .2000-2020 John Wiley 8 Sons, Inc. All Rights Reserved. A…

(IN SAS) Using the data set, ‘heart.xlsx', do the following: a) Generate a bar chart showing the frequencies for the variable, Status. b) Generate a bar chart showing the mean Cholesterol value for men and women. The variable names are Cholesterol and Sex. c) Generate a horizontal bar chart showing the mean Height for men and women. d) Generate a scatter plot with Height on the x axis and Weight on the y axis. e) Generate a histogram for the variable, Cholesterol. f) Add a normal curve along with the histogram in part (e). g) Generate two horizontal box plots that show the distribution of Cholesterol for men and women (variable Sex).

Advantages of using a related sample (either one sample of participants with repeated measures or two matched samples) versus using two independent samples include which of the following? Check all that apply. A study that uses related samples to compare two drugs (specifically, one sample of participants with repeated measures) can have a carryover and/or order effect such that the effects of the drug taken before the first measurement may not wear off before the second measurement.   Related samples (specifically, one sample of participants with repeated measures) require fewer participants for the same degree of power.   Related samples (specifically, one sample of participants with repeated measures) can have an order effect such that a change observed between one measurement and the next might be attributable to the order in which the measurements were taken rather than to a treatment effect.   Related samples have less sample variance, increasing the likelihood of…