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Homework 1
l. A real estate agent wishes to est
two years in Mecklenburg Cou
sold in that period. . - . . . -
imate the mean number of days on the market of all houses sold in the last
nty. To d
2 A breeder of thoroughbred horses wishes to model the relationship bet
Cine smm
W415?
Homework 19
To get all the credits you have to provide how you solved each of the following problems.
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Homework 18
To get all the credits you have to provide how you solved each of the following problems.
Problems 18 through 20 pertain to the following Situation:
Economic theory sugges
STAT 1222
8.2 Large Sample Tests for a Population Mean
DECISION RULE BASED ON P- VALUES
To use Pvalue to make a conclusion in a hypothesis test, compare the P-value with a.
1. If P S a, then reject H0
STAT 1222
8.4 Small Sample Tests for a Population Mean
in real life, it is often not practical to collect samples of size 30 or more. However, if the population has a
normal, or nearly normal, distrib
STAT 1222
8.5 Large Sample Tests for a Population Proportion
in this section we will learn how to perform a hypothesis testfor'a population proportion, p.
z-TEST FOR A PROPORTION p
The ztestfora propo
2.4 Relative Position of Data
Percentiles and Percentile Rank
Given an observed value x is the Pth percentile ofthe data if the percentage of the data that are less
than or equal to x is P. The number
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STATS 1222
8.1 THE ELEMENTS of HYPOTHESIS TESTING
A I! 10:! E56 k 5+ is a process that uses sample statistics
to test a c aim about the value of a population parameter.
Researchers in medici
STAT 1222
9.1 Comparison of Two Population Means: Large, Independent Samples
Objectives:
0 How to decide whether two samples are independent or dependent
0 An introduction to two-sample hypothesis tes
STAT 1222
9.2 Comparison of Two Population Means: Small, Independent Samples
Objectives:
0 How to perform a two-sample t-test for the difference between two population means p1 and
p2 using small inde
Aft Statistics Chagter 9 Review #1 Name E ij_4u._mnwmwu
In Exercises 1 8 assume that women 5 heights are normally distributed with a mean given by um 63. 6 In and a
standard deviation given by on 2.5
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Example 1:
The average speed of vehicles traveling on a stretch of highway Is 67 miles per hour with a standard
dev
Quiz 2 Stats 1222 (5.1-7.4)
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8138 a 66
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question
nofMalCJ'p (' N1- 2'5)
Provide
Homework 3
Due 01/21
1. A mother is told that her 13 year old son's height is the 85th percentile. This implies that:
(a) Her son's height is less than that of 85% of all 13 year old boys.
(b) Her son
Quiz 1 Stats 1222 (1.1-4.2)
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Determine whether the data are qualitative or quantitative.
1) the
Homework 2
Due 01/19
Questions 1, 2 and 3. In a survey of daily internet game time usage by college school students, a sample of 7
students provided the following data:
3 1.5 2.2 1.5 0.5 .0 2.5
1 Find
a @9015. a
- lbpi's holeL 3 Aw?
Homework 10
SqulYCl' (Nah Due 02/25
To get all the credits you have to provide how you solved each of the following problems.
Use the following information for question
[p (ML
[0 mks cfw_PMWUYK is shown
(Settling! pomfs WW3 QM loo
Homework 9
Due 02/25
To get all the, credits you have to provide how you solved each of the following problems.
1. The proportion of a pop
/ 6, 111+; (Oct-
31%? 9 M S Q V WK Homework 7
51) F Due 02/11
gulrbkc-l pmnlj WW3 (ml of) (or)
hot mod all? (7041001307012 3"!)
If :1 is a noiinally distributed 1'andom valiable with mean 762 and stan
10/6/2017
Quiz 11: Section 6.3: 201780-Fall 2017-Linker_Combined
Quiz 11: Sec on 6.3
Due Oct 10 at 3:15pm
Points 9
Questions 5
Available Oct 3 at 4:30pm - Oct 12 at 3:15pm 9 days
Time Limit None
Allow
Homework 9
If :1: is a normally distributed random variable with mean 762 and standard deviation 34 then
PC: 2 704 is
) norm! 0161.704, /0,000/ 762/39
(a) 0.8212 (b) 0.831] @D (d) 0.0436 (e) 0.5436
2.
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Homework 3
l. A mother is told that her 13 year old son's height is the 85th percentile. This implies that:
W Her son has attained 85% of his adult height.
ller son' 5 height is 85% of the a
1,1th WW
Questions 1, 2 and 3. In a survey of daily intemet game time usage by college school students, a sample of 7
students provided the following data:
3 1.5 2.2 1.5 0.5 0 2.5
1 Find the mean of t