Zarina Turtulova test #2
PROBLEM 1
The 2003 Zagat Restaurant Survey provides food, dcor, and service ratings for some of the top restauran
across the United States. For 15 top-ranked restaurants located in New York, the average price of a dinne
including,
Zarina Turtulova chapter 9
problem 9-13
0.5
h0 u = 30,000
Ha u <30,000
0.05
u
n
x_bar
stdev_p
z=
30000
100
29750
250
29750-30000
250
z0
-1.645 z
=
-1
c.
We won't reject the null hypothesis, because
our test value does fall within the rejection
region.
Onl
Z Test for Differences in Two Proportions
Data
Hypothesized Difference
Level of Significance
Group 1
Number of Items of Interest
Sample Size
Group 2
Number of Items of Interest
Sample Size
0
0.01
63
550
285
425
Intermediate Calculations
Group 1 Proportion
1
Learning Packet for Normal Distribution
Normal DistributionDiscover the Empirical Rule
1. Here are the lengths of 100 adult noses. The mean is 45.07 and the standard deviation is 5.91.
31 34 35 35 36 36 36 37 37 38 38 38 39 39 39 39 39 39 39 39 40 40 40
1
Learning Packet for Expected Value and Variance
Random VariablesExpected Values
1. You are the DJ at a local radio station and you ask callers to rate a new song on a scale from 1 to 4. The rst
100 callers have submitted their ratings and you are now su
Probability Part 2 KEY
ProbabilityConditional Probability Introduction
*For your information, here are the cards in a standard 52 card deck.
Red
Hearts
Diamonds
2
3
4
5
6
7
8
9
10
Jack
Queen
King
Ace
2
3
4
5
6
7
8
9
10
Jack
Queen
King
Ace
Black
Spades
Clu
n
n
By sampling a dominantly conservative the results will be conservatively
biased. Consequently, the sampling carries little weight on the national
level.
A phone book is still regional, just as the example above. With out consideration of randomizing
Gathering and Describing Data KEY
Chapter 3Producing Data
Anecdotal Evidence
These are stories that we hear and we consciously or subconsciously try to gather information from these
stories.
e.g. In 2010 a Polish plane crashed in Russia. Oh no, planes mu
Chapter 1
The tools that marketers use include Branding & Strategy, Marketing & Communications,
Social Media, and Web Marketing.
While the tactics used in marketing plans routinely evolve, the strategies remain constant
over time.
Great marketers perfor
x=
x1 + x2 + x3 + + xn
n
s2 =
P (A
( x1
2
x) + ( x2
2
x) + + ( xn
n1
) = P ( A) + P ( B )
P (A | B ) =
P(
P(
)
P (B )
P(
) = P (A | B ) P (B )
P(
) = P ( A) P ( B )
x)
2
)
X = x 1 p 1 + x 2 p2 + + x k p k
q
2
2
( x 1 X ) p 1 + ( x 2 X ) p2 + + ( x k
X=
2