# Stat 1350 Lab 8

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 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: 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