Column Fe and (Fo - fe) ^2/fe is incorrect
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 5E
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Question
Column Fe and (Fo - fe) ^2/fe is incorrect
Transcribed Image Text:Banner Mattress and Furniture Company wishes to study the number of credit applications received per day for the last 300 days.
The sample information is reported below.
Frequency
(Number of Days)
Number of Credit
Applications
50
1
77
2.
81
3.
48
31
5 or more
13
picture Click here for the Excel Data File
To interpret, there were 50 days on which no credit applications were received, 77 days on which only one application was received,
and so on. Would it be reasonable to conclude that the population distribution is Poisson with a mean of 2.0? Use the 0.05 significance
level. Hint To find the expected frequencies use the Poisson distribution with a mean of 2.0. Find the probability of exactly one
success given a Poisson distribution with a mean of 2.0. Multiply this probability by 300 to find the expected frequency for the number
of days in which there was exactly one application. Determine the expected frequency for the other days in a similar manner.
Họ: Distribution with Poisson with u= 2.
H: Distribution is not Poisson with u=2
Transcribed Image Text:b. Compute the value of chi-square. (Round f, to 2 decimal places. Round (f, - fo2if, to 4 decimal places. Round x to 4 decimal
places.)
Applications
fe
50
0.00
0.0000
1
77
729.00
14.5800
nces
81
961.00
19.2200
3
48
4.00
0.0800
4
31
361.00
7.2200
1,369.00
27.3800
13
300
5 or more
Total
68.4800
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