Publications by William Hernandez
Chapter 2 HW
2.1.1 A) Observational Unit: Acropithecus Rigidus Sample size : 36 specimens Variable : The width (in mm) B) Observational unit: Babies Sample Size: 65 Variables: birth weight, Date of Birth, and mothers race Type of variable: Categorical 2.1.3 A) Observational unit: Plants Sample Size : 25 Variables : leaves Type of Variable : Dis...
1579 sym R (4928 sym/64 pcs) 8 img 2 tbl
Quiz_2
1 The carbon monoxide in cigarettes is thought to be hazardous to the fetus of a pregnant woman who smokes. In a study of this hypothesis, blood was drawn from pregnant women before and after smoking a cigarette. Measurements were made of the percent increase of blood hemoglobin bound to carbon monoxide (COHb). The results for 26 women are: ...
1750 sym 3 img
Homework 3
3.6.1 three yellow and one green? dbinom(3, size = 4, prob = .75) ## [1] 0.421875 all four yellow? dbinom(4, size = 4, prob = .75) ## [1] 0.3164063 All four are the same number? dbinom(0, size = 4, prob = .75) ## 0 in my understanding is 0 successes to get yellow ## [1] 0.00390625 probability for 4 greens = 0.00390625 probability for 4 yellow...
770 sym
Lab 3
library(tidyverse) ## ── Attaching packages ─────────────────────────────────────── tidyverse 1.3.2 ── ## ✔ ggplot2 3.3.6 ✔ purrr 0.3.4 ## ✔ tibble 3.1.8 ✔ dplyr 1.0.10 ## ✔ tidyr 1.2.0 ✔ stringr 1.4.1 ## ✔ readr 2.1.2...
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HW
library(tidyverse) ## ── Attaching packages ─────────────────────────────────────── tidyverse 1.3.2 ── ## ✔ ggplot2 3.3.6 ✔ purrr 0.3.4 ## ✔ tibble 3.1.8 ✔ dplyr 1.0.10 ## ✔ tidyr 1.2.0 ✔ stringr 1.4.1 ## ✔ readr 2.1.2...
2046 sym R (4727 sym/62 pcs) 25 img
lab
The Data download.file("http://www.openintro.org/stat/data/bdims.RData", destfile = "bdims.RData") load("bdims.RData") head(bdims) ## bia.di bii.di bit.di che.de che.di elb.di wri.di kne.di ank.di sho.gi che.gi ## 1 42.9 26.0 31.5 17.7 28.0 13.1 10.4 18.8 14.1 106.2 89.5 ## 2 43.7 28.5 33.5 16.9 30.8 14.0 ...
3376 sym 16 img
Quiz
Q2 A) probabilities for table dbinom(0,6,.23) ## [1] 0.2084224 dbinom(1,6,.23) ## [1] 0.3735362 dbinom(2,6,.23) ## [1] 0.2789394 dbinom(3,6,.23) ## [1] 0.1110927 dbinom(4,6,.23) ## [1] 0.02488766 dbinom(5,6,.23) ## [1] 0.00297359 dbinom(6,6,.23) ## [1] 0.0001480359 B) Find Pr{Y>=3} probability = 0.139 dbinom(3,6,.23)+ dbinom(4,6,.23)+ dbi...
131 sym
quiz
library(tidyverse) ## ── Attaching packages ─────────────────────────────────────── tidyverse 1.3.2 ── ## ✔ ggplot2 3.3.6 ✔ purrr 0.3.4 ## ✔ tibble 3.1.8 ✔ dplyr 1.0.10 ## ✔ tidyr 1.2.0 ✔ stringr 1.4.1 ## ✔ readr 2.1.2...
1918 sym R (2498 sym/18 pcs) 6 img