Tanya Bhalla
Homework 12
3rd Edition
CHAPTER 22:
4)a. Null: the calcium and placebo-treated participants came from populations
with equally severe PMS mood swings. Alternative hypothesis: the calcium and
placebo treated participants came from populations

Tanya Bhalla
Chapter 8
3.
Intro to Stats Reasoning
a. -0.67
b. 0.67
1/3/15
Homework #5
Guy Cohen
c. -0.13
d. 2.05
5.
a. 0.68
b. 0.86
c. 0.34
8.
a. Z= (X - ) /
Z = (450-497)/ 115
Z = -0.41 percentile is 34 A GRE score of 450 is in the 34th percentile
b. Z

Tanya Bhalla
15/02/15
Introduction to Statistical Reasoning
Professor Cohen
Homework 3 Questions 5, 11, 14, and 16 from Chapter 4 and Questions 1, 7, 15,
24, and 27 from Chapter 5.
Chapter 4: 5, 11, 14, 16
5) a. A unit is a single individual or object to

Tanya Bhalla
6/02/15
Introduction to Statistical Reasoning
Professor Cohen
Chapter 2: 1, 4, 8, 10, and 16 from Chapter 2 and Questions 24, 20, 5, 14, and 18
from Chapter 3.
Chapter 2:
1) The only people who would call in to either number are those who fee

Tanya Bhalla
26/01/15
Introduction to Statistical Reasoning
Professor Cohen
Chapter 1: 1,2,5,7,10,16 (Textbook Edition 3)
1. Since this was an at least single-blind experiment, there were proper
methods and precautions taken to ensure that all other varia

STATS REVIEW
1. Assuming there is a statistical relationship between height and weight for adult females,
which of the following statements is true?
a. If we knew a womans height, we could predict her weight.
b. If we knew a womans height, we could determ

Kalpana Mohanty
Statistics Homework:
1. Those who are likely to be watching at the end of the show are most
likely those that liked the show and watched till the end of it. Therefor you
would only receive very positive responses. Additionally, because the

Homework 7 Chapter 13 - 3, 9, 10, 11, 17, 23 (see question 22 for
the footnote)
3a. There is a relationship between the two variables in the sample
b. That does not necessarily mean there is a relationship between the two
variables in the population
c. It

Homework 3 Questions 5, 11, 14, and 16 from Chapter 4 and
Questions 1, 7, 15, 24, and 27 from Chapter 5
5a. For this survey, the population is college freshmen, and the sample is
252,082 full-time freshmen at 464 two and four year colleges and
universitie

Part W: MAKING IUBGEMENTS FROM SURVEYS AND EXPERIMENTS.
15. The Diversity of Samples from the Same Population
19. Estimating Proportions with Condence.
2B. The Role ofConfidenoe inoervals in Research.
21. Rejecting [lhancenTesting Hypothesis in Research.

Introduction to Statistical Reasoning
Syllabus and Description
Ha H. Nguyen
Department of Statistics
Columbia Universitr
hhn2108@columbiaodu
Statistics has impact our lives in many waysI in business, nance, sciences. and
medical elds. From newspapers to s

STATS NOTES:
Population: all subjects of interest
Sample: representative subset of the population
Interpolation: filling data points between the data you have
Quantitative Continuous: a continuum of values like height, weight, distance
Quantitative Discre