Which of the following is an example of a secondary data collection method? A) Running experiments in a laboratory B) Conducting observations in a natural setting Accessing government records and databases Conducting a survey of student where the data will be used
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- Motorcycle Safety: As part of a study on motorcycle safety, the Texas Department of Motor Vehicles (DMV) collected data on the number of serious motorcycle accidents per 1000 licenses and the percentage of licensed drivers under the age of 25 in a sample of 42 counties. Data was collected over a one-year period follow and is contained in the attached data file named Motorcycles. Prepare a report that addresses the following: a. Develop numerical and graphical summaries of the data. b. Use regression analysis to investigate the relationship between the number of serious motorcycle accidents and the percentage of drivers under the age of 25. Discuss your findings. c. What conclusion and recommendations can you derive from your analysis?TOPIC: MEASURE OF POSITION AND CENTRAL TENDENCYYour team members were interested in (a) how students were connecting with their professors and lecture content, (b) how in control students felt over their learning, and (c) how much they valued what they were learning during online lectures given the switch from in-person to virtual learning at the start of the pandemic. They collected data by briefly interrupting students at three-time points throughout an online lecture (similar to Dataset 1) to answer three different questions. They were asked “did you generate a personal connection with the information you were learning?” on a scale of 1 (not at all) to 9 (extremely), “I have the impression that my learning the content from this lecture so far has been under my control” on a scale from 1 (strongly disagree) to 5 (strongly agree), and “I believe that the content I learned from this lecture so far has been valuable for me to learn” on a scale from 1 (strongly disagree) to 5 (strongly agree). Each answer that participants provided…
- Which set of data would probably show a strong positive linear correlation? a) the number of defective light bulbs produced and the time of the day when they were manufactured b) marks on a history test and the heights of the students c) the colour of cars sold and the annual income of the car buyers d) the height of corn in a field and the amount of precipitation during the growing season acerInvestigation 3.2: Valence Differences Between R&B and Rap Genres (Paired)A music fan claims that R&B songs tend to have a more positive tone on average than do Rapsongs. The individual collected two independent random samples from the population of SpotifySongs. Fifteen R&B songs and another fifteen Rap songs were collected and their Valence wasrecorded. The music fan believed that pairing the song by their Danceability may provideadditional information. Danceability describes how suitable a track is for dancing based on acombination of musical elements including tempo, rhythm stability, beat strength, and overallregularity. A value of 0.0 is least danceable and 1 is most danceable. Thus, the individual pairedthe R&B song with the lowest danceability with the Rap song with the lowest danceability,followed by the second and second, third and third. She continued this process until the R&Bsong with the highest danceability was paired with the Rap song with the…Which set of data would probably show a strong positive linear correlation? a) the number of defective light bulbs produced and the time of the day when they were manufactured b) marks on a history test and the heights of the students c) the colour of cars sold and the annual income of the car buyers d) the height of corn in a field and the amount of precipitation during the growing season
- Dataset for question (4.2.) Amount of Money Spent on Vehicle extras by 7 customers: Customer Amount_Spent х1 2300 x2 2386 x3 1920 х4 1578 x5 3065 х6 2312 x7 1790 4.2. A car dealer wants to know if the purchasing habits of buyers buying extras for their vehicles have changed. He is particularly interested in determining if male buyers are willing to spend more money on extras for their cars. Based on data collected over the past year, he has estimated that the distribution of the amount of money spent on extras is approximately normally distributed with an average of R2 000 per customer. To test this hypothesis, he has collected the following information concerning the amount of money that the last seven male customers have spent on extras (Rands). Provide all the steps.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…tutu In physiology, an objective measure of aerobic fitness is how efficiently the body can absorb and use oxygen (oxygen consumption). A physiologist, Dr. Castillejo, conducted a research wherein subjects participated in a predetermined exercise run of 1.5 miles. Measurements of oxygen consumption as well as several other variables such as age, gender, runtime, resting and maximum pulse rates, and weight were recorded from 50 randomly selected gym members. Dr. Castillejo is interested in determining whether any of these other variables can help predict oxygen consumption. She believes that a possible link between these factors will help her determine how to improve the health of her gym members. Help Dr. Castillejo in developing a proposal for the improvement of her gym members' health condition. The variables are described below. gender- either male or female runtime - time to run 1.5 miles (in min) age - age of the gym member in years weight - weight of the gym member (in kg) oxygen…
- Literacy rate is a reflection of the educational facilities and quality of education available in a country, and mass communication plays a large part in the educational process. In an effort to relate the literacy rate of a country to various mass communication outlets, a demographer has proposed to relate literacy rate to the following variables: number of daily newspaper copies (per 1000 population), number of radios (per 1000 population), and number of TV sets (per 1000 population). Here are the data for a sample of 10 countries:A study is performed to assess the prevalence of use of anti-hypertensive medication (MEDS) in the non-institutionalized U.S. population. The following data are reported for MEDS status of the U.S. population by age-sex group: Table 1 Estimated MEDS Status of the U.S. Population by age and sex group, NHANES study 1999-2018 Males Females Age Group MEDS = yes Na Age Group MEDS = yes Na 18-29 160,617 23,069,867 18-29 168,940 22,132,949 30-39 899,152 18,690,754 30-39 759,532 18,937,878 40-49 2,264,304 18,316,125 40-49 2,257,203 18,816,304 50-59 3,215,688 15,022,905 50-59 4,059,363 15,997,653 60-69 2,936,183 8,400,156 60-69 4,260,975 10,993,805 70-79 1,677,664 4,012,930 70-79 2,953,646 6,012,728 aN = total sample size in specific age-sex groups. a. What is the prevalence of use of MEDS in 40-49 year-old females? b. Suppose a married couple consists…e blackboard.njcu.edu Bb NJCU BIlackboard Ultra Content Launch Meeting - Zoom * Question Completion Status: QUESTION 1 The following dataset consists of the number of siblings reported by 4 people: х: ( 2, 3, 0, 1} Perform the following operations: O a. 8 O b.6 Ос. 14 O d. 36 QUESTION 2 scale: The ethnicity group of the subjects in the experiment is an example of