The valence of a song is measured from 0 to 10 and detects the musical positiveness conveyed in the song. Tracks with high valence sound more positive (e.g. happy, chwith low valence sound more negative (e.g. sad, depressed, angry).The valence was computed for 42,000 songs on Spotify in the genres of Techno, Techhouse, Trance, Trap, Psytrance, DnB, Hardstyle, Underground Rap, Trap Metal, EmoThe table below shows the number of songs with a given valence measurement.Valence1.52.54.45.36.36.77.78.79.7Number of songs3557317523882078157914381023651245Source: Kaggle(a) Based on a scatter plot of the data in the table, why is a linear model appropriate?The scatter plot suggests a steady,---Select---with a ---Select--- slope.(b) Find the linear model that gives the number of songs with a given valence, where v is the valence, for 0 ≤ v ≤ 10. (Round all values to two decimal places.L(v) =---Select---C(c) The constant rate of change for the model is(d) Use the model to estimate the number of extremely sad/negative songs with valence 0.5. (Round your answer to the nearest integer.)

The question is about regression.Given :

Answered: The valence of a song is measured from…

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 chart displays the average rate of people living in poverty in the 23 continental states west of the Mississippi River for the years 2014 – 2016. Create a stemplot for these data. Note that a stemplot never shows the decimal symbol and only the rightmost digit is used for the leaf. (https://www.census.gov/data/tables/2017/demo/income-poverty/p60-259.html) Average rate of people living in poverty in the 23 continental states west of the Mississippi River for the years 2014 – 2016 State Rate of Poverty (%) Minnesota 8.3 Utah 9.4 Iowa 10.1 Wyoming 10.1 Colorado 10.2 North Dakota 10.5 Nebraska 10.6 Missouri 11.1 Washington 11.5 Idaho 11.9 Montana 11.9 Kansas 12.5 Oregon 12.7 Nevada 13.4 South Dakota 13.7 California 14.5 Texas 15.0 Oklahoma 15.4 Arkansas 16.8 Arizona 18.2 New Mexico 19.1 Louisiana 20.6 Mississippi 20.8
In 2020, there were 7.8 billion people in the world, and 5.16 billion had cell phones.¹ Approximately % of the people on Earth do not have cell phones in 2020.
A tidal wave or tsunami is usually the result of an earthquake in the Pacific Rim, often 1000 or more miles from Hawaii. Tsunamis are rare but dangerous. Many tsunamis are small and do little damage. However, a tsunami nine meters or higher is very dangerous. Civil Defense authorities sound an alarm telling people near the beach to go to higher ground. About 30% of all recorded tsunamis have been nine meters or higher.† You are writing a report about five recent earthquakes in the Pacific Rim and you want to include a brief statistical profile of some possible events regarding tsunamis in Hawaii. Let r be the number of tsunamis nine meters or higher resulting from five randomly chosen earthquakes in the Pacific Rim. What is the probability none of the tsunamis are nine meters or higher? (Round your answer to three decimal places.)
Most vertebrate adult body sizes remain constant or increase throughout their lives. Marine iguanas are different in that they can actually decrease in size, in periods of low food availability. Examine the data set here, and test the hypothesis that on average across time, iguana length changed (increased) by 1 mm. Paste your R code in the answer box, and tell me your conclusion. Data is here: https://github.com/lisamanne/biostats_data/raw/main/Iguana_lengths.csv DATA- Tributary,Species_upstream,Species_downstream I��,14,19 Juta�,11,18 Japur�,8,8 Coari,5,7 Purus,10,16 Manacapuru,5,6 Negro,23,24 Madeira,29,30 Trombetas,19,16 Tapaj�s,16,20 Xingu,25,21 Tocantins,10,12
If an earthquake measures 6.8 on the Richter Scale, what is the intensity of this earthquake, relative to a 0-level earthquake? Round off your answer to the nearest integer.
Tch Generally, 1 in 40 women will develop skin cancer in their lifetime. A study showed that that the use of tanning beds increased a woman's risk of skin cancer by 50%. a. Write the risk factor of 1 in 40 women as a natural frequency out of 1000 American females: women out of 1000 women will develop skin cancer in their lifetime. Write this answer in Blank 1. b. If every American woman used tanning beds, find the number out of 1000 that would develop skin cancer in their lifetime. Round to the nearest whole number. Write this answer in Blank 2. Make sure you write down any work, calculations, or reasoning that you used to get to your solution. Blank #1 25 Blank #2 S I G A A
In the last year, a total of 14,905 earthquakes occurred in a country. Of these, 89.3% were minor tremors with magnitudes of 4.9 or less on the Richter scale. How many minor earthquakes occurred in the country in the last year?
The national center for educational statistics reported that in 2008-2009, 178,564 master's degrees in education were awarded in the United States, and that this represented 27% of all master's degrees awarded. How many master's degrees were awarded in 2008-2009?
Every year favorite songs compete to be on a Top 200 list based upon sales and rankings by the experts in the music industry. These songs have many characteristics, such as song length and beats per minute, which vary from category to category in the music industry. A DJ wondered if the number of beats per minute in songs classified as dance music were lower than the beats per minute in the songs that are ranked on a Top 200 list from 2001. A random sample of songs from each group was selected and the beats per minute are listed in the chart at the right. Calculate and interpret the 90% confidence interval for the difference in beats per minute between songs that are classified as dance music and songs that are ranked on a Top 200 list.
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A tidal wave or tsunami is usually the result of an earthquake in the Pacific Rim, often 1000 or more miles from Hawaii. Tsunamis are rare but dangerous. Many tsunamis are small and do little damage. However, a tsunami nine meters or higher is very dangerous. Civil Defense authorities sound an alarm telling people near the beach to go to higher ground. About 30% of all recorded tsunamis have been nine meters or higher.† You are writing a report about eight recent earthquakes in the Pacific Rim and you want to include a brief statistical profile of some possible events regarding tsunamis in Hawaii. Let r be the number of tsunamis nine meters or higher resulting from eight randomly chosen earthquakes in the Pacific Rim. Make a histogram of the probability distribution of r.
If an earthquake measures 2.4 on the Richter Scale, what is the intensity of this earthquake, relative to a 0-level earthquake? Round off your answer to the nearest integer.

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