# Stat 1350

THE HISTORY OF THE GUITAR
THE HISTORY OF THE GUITAR The guitar is a fretted, stringed instrument, and is a member of the lute family. It originated in Persia and reached Spain during the twelth-century, where it?s versatility as both a solo and accompanying instrument were established. The theory of the guitar was discovered in the early centuries. They found that the sound of a bowstring could be enhanced by attaching a resonating chamber -most like a tortiseshell- to the bow. From the bow came essentially three main ty
CENSORSHIP ON THE INTERNET
CENSORSHIP ON THE INTERNET A 43-year-old man from Boston was having a steamy cyber affair with who he thought to be a 23-year-old woman. He later found out the she, to his dismay, was an 80-year-old man living in a Miami nursing home. Things like this happen everyday, people mask their sex and age to avoid or attract attention on the Internet. This is only one of the reasons why the government wants to censor the Internet. They claim they want to ?protect? the children by limiting the amount o
Probability and Sampling Distributions
STAT 1350: Elementary Statistics Lab Activity #___________ Name(s)_________________________ Probability and Sampling Distributions Date ___________________________ A recent Gallup Poll asked a simple random sample of 1600 American adults, “Have you, yourself smoked any cigarettes in the past week?” Suppose that in fact 20% of all American adults would answer “yes” if asked this question. The proportion of the sample who answers “yes” will vary in repeated sampling. To investigate this, we simula
STAT 1350: Elementary Statistics
STAT 1350: Elementary Statistics Lab Activity #_18__ Name(s)_Aya A. & Elizabeth S._ Probability and Sampling Distributions Date ___11/19/15_____ A recent Gallup Poll asked a simple random sample of 1600 American adults, “Have you, yourself smoked any cigarettes in the past week?” Suppose that in fact 20% of all American adults would answer “yes” if asked this question. The proportion of the sample who answers “yes” will vary in repeated sampling. To investigate this, we simulated 1000 samples of
STAT 1350: Elementary Statistics Names
STAT 1350: Elementary Statistics Names: Lab Activity #16 Date: Probability Random Books Suppose that on one night at a certain college, four students (named Johnson, Miller, Smith, and Williams) each left their books behind in class. Not sure who to return the books to, as they are unlabeled, the professor returns the books to the students in a random order. We will first use simulation to investigate what will happen in the long run if this were to happen many times. Simulation Analysis: 1. Tak
STAT 1350: Elementary Statistics
STAT 1350: Elementary Statistics Lab Activity #5 Name(s) Graphs :Histogram-Graphing Calculator Date _10/20/15_ Entering Data into the TI-83 To use the statistical functions built into the TI-83, we first have to enter data into lists. The TI-83 has six columns (called lists L1, L2, L3, L4, L5, and L6) in which data can be entered. Press the STAT key and then select 1:Edit. You will now the data screen with the six lists, L1 through L6 (use your right arrow to see L4 through L6). If there is alre
Stat 1350 - Elementary Statistics
Stat 1350 - Elementary Statistics Jigsaw Review for Test 2 Chapters 14-15 and 17-20 Group 1 - Regression - Chapters 14-15: 1. From Rex Boggs in Australia comes an unusual data set: before showering in the morning, he weighed the bar of soap in his shower stall. The weight goes down as the soap is used. The data appear in Table II.3 (weights in grams). Notice that Mr. Boggs forgot to weigh the soap on some days. [pic] A. Plot the weight of the bar of soap against day. [pic] [pic] B. Is the overa
STAT 1350, Quiz #4, Summer 2014Name ______________
STAT 1350, Quiz #4, Summer 2014Name _______________________________________ 1. Confounding often defeats attempts to show that one variable causes changes in another variable. Confounding means that A) this was an observational study, so cause and effect conclusions are not possible. B) the effects of several variables are mixed up, so we cannot say which is causing the response. C) we don\'t know which is the response variable and which is the explanatory variable. D) we would get widely varie
STAT 1350: Elementary Statistics
STAT 1350: Elementary Statistics Lab Activity #4 Name(s)_________________________ Simple Random and Stratified Random Sampling Date ___________________________ A Simple Random Sample The college believes that 55% of the student body resides on campus. Use the random number table (attached) to randomly select 10 students. Label the sampling frame using two digit numbers. 1. Pick a simple random sample of 10 students. a. Describe the procedure: STEP 1: STEP 2: Started at row _____________________
STAT 1350, Quiz #10, Summer 2014
STAT 1350, Quiz #10, Summer 2014 Name _______________________________________ 1-3. A random sample of patients who attended a clinic was selected. The age of the patient (years) and the number of days since the last visit were collected and are displayed in the figure below. The least-squares regression line for predicting number of days since the last visit from the age of the patient is y = 600.081 – 8.694x. 1. The slope of this line is A) 600.081. B) 8.694. C) –8.694. D) 600.081 – 8.694 = 591
STAT 1350, Quiz #9, Summer 2014
STAT 1350, Quiz #9, Summer 2014 Name _______________________________________ 1. The correlation between the heights of fathers and the heights of their (adult) sons is r = 0.52. This tells us that A) taller-than-average fathers tend to have taller-than-average sons. B) taller-than-average fathers tend to have shorter-than-average sons. C) sons are, on the average, taller than their fathers. D) 52% of all sons are taller than their fathers. E) there is almost no connection between heights of fath
STAT 1350, Quiz #5, Summer 2014
STAT 1350, Quiz #5, Summer 2014 Name _______________________________________ 1. A company database contains the following information about each employee: age, date hired, sex (male or female), ethnic group (Asian, black, Hispanic, etc.), job category (clerical, management, technical, etc.), and yearly salary. Which of the following lists of variables are all categorical? A) Age, sex, ethnic group B) Sex, ethnic group, job category C) Ethnic group, job category, yearly salary D) Yearly salary, a
STAT 1350, Quiz #11, Summer 2014
STAT 1350, Quiz #11, Summer 2014 Name _______________________________________ 1. If I toss a fair coin five times and the outcomes are TTTTT, then the probability that tails appears on the next toss is A) 0.5. B) less than 0.5. C) greater than 0.5. D) 0. E) 1. Ans: A 2. If I toss a fair coin 5000 times A) the number of heads will be close to 2500. B) the proportion of heads will be close to 0.5. C) the proportion of heads in these tosses is a parameter. D) the proportion of heads will be close t
STAT 1350: Elementary Statistics
STAT 1350: Elementary Statistics Lab Activity #11 Name(s)_________________________ Graphs :Boxplots-Graphing Calculator Date ___________________________ Boxplots: Do women peak earlier than men in their acting career? Boxplots are a very useful graph for comparing the same variable between strata of a population. Look at the data given in below. Can you give a conclusive answer to the question stated above by examining the raw data? Oscar Data - Ages of Best Actors and Actresses |Year of Award|
STAT 1350: Elementary Statistics Names
: STAT 1350: Elementary Statistics Names: Lab Activity #2 Statistical Scavenger Hunt I The Gallup Organization (www.gallup.com) provides data on all aspects of the attitudes and lifestyles of people around the world. Gallup is just one of many organizations who try to determine what the public is thinking by conducting scientific polls. Try to find a report at Gallup or any other opinion poll source that lists as much information as possible. 1. What is the title and source of the report you foun
SOAL UTN 1 2016 PPG ANGKATAN IV
SOAL UTN 1 2016 PPG ANGKATAN IV (1) â€¦â€¦â€¦â€¦â€¦. it is acquired from society. We are born with the capacity to make 40 sounds. Our genetics allows our brain to make associations between sounds and objects, actions, or ideas. (2)â€¦â€¦â€¦â€¦â€¦ a baby's babbling sound ma -ma-ma become mama and then mother. The appropriate sentence for the blank space (1) in the text isâ€¦â€¦â€¦â€¦ Language is not genetically inherited Language is a means of leaning things Language is god's special gift