that touts its late-night service. After one week of advertising, the restaurant's officials count the number of cars, X, arriving at the restaurant's drive-through between the hours of 12:00 midnight and 12:30 A.M. for 198 of its restaurants. The results are shown in the following table. Use the table to answer parts (a) through (c) to the right. Click the icon to view the data table. Restaurant car arrival frequency x (number of cars arriving) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Frequency THREESENSKON3NON 4 5 14 23 25 25 26 27 20 15 5 2 2 0 2 O - X 7 .1377 8 1033 (Type integers or decimals rounded to four decimal places as needed.) 0 OMSO 1606 (b) Compute the expected number of restaurants that will have 0 arrivals, 1 arrival, and so on. 3 Compute the number of restaurants that expect to have x cars. x (# Number of x (# Number of of cars) restaurants of cars) restaurants o 9 14 9 1 2 3 18 4 27 5 32 6 32 7 27 8 20 (Type whole numbers.) 15 16 10 11 12 13 14 15 16 8 .0009 .0003 4 2 1 0 0 0 (c) Compare these results with the number of arrivals after the advertising. Does it appear the advertising was effective? Why? What is the observed total number of arrivals? Clear all Check answer
that touts its late-night service. After one week of advertising, the restaurant's officials count the number of cars, X, arriving at the restaurant's drive-through between the hours of 12:00 midnight and 12:30 A.M. for 198 of its restaurants. The results are shown in the following table. Use the table to answer parts (a) through (c) to the right. Click the icon to view the data table. Restaurant car arrival frequency x (number of cars arriving) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Frequency THREESENSKON3NON 4 5 14 23 25 25 26 27 20 15 5 2 2 0 2 O - X 7 .1377 8 1033 (Type integers or decimals rounded to four decimal places as needed.) 0 OMSO 1606 (b) Compute the expected number of restaurants that will have 0 arrivals, 1 arrival, and so on. 3 Compute the number of restaurants that expect to have x cars. x (# Number of x (# Number of of cars) restaurants of cars) restaurants o 9 14 9 1 2 3 18 4 27 5 32 6 32 7 27 8 20 (Type whole numbers.) 15 16 10 11 12 13 14 15 16 8 .0009 .0003 4 2 1 0 0 0 (c) Compare these results with the number of arrivals after the advertising. Does it appear the advertising was effective? Why? What is the observed total number of arrivals? Clear all Check answer
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
Question 8 part c
Transcribed Image Text:D
Cars arrive at a certain restaurant's drive-through at a rate of 0.2 cars per minute between the
hours of 11:00 P.M. and 1:00 A.M. on Saturday evening. The restaurant begins an advertising blitz
that touts its late-night service. After one week of advertising, the restaurant's officials count the
number of cars, X, arriving at the restaurant's drive-through between the hours of 12:00 midnight
and 12:30 A.M. for 198 of its restaurants. The results are shown in the following table. Use the
table to answer parts (a) through (c) to the right.
Click the icon to view the data table.
Restaurant car arrival frequency
x (number of
cars arriving)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Frequency
TSHEERANNM NON
4
5
14
23
25
25
26
27
20
15
5
2
3
rah or tyne URL
-
X
.1606
.1606
7
.1377
8
1033
(Type integers or decimals rounded to four decimal places as needed.)
1
2
(b) Compute the expected number of restaurants that will have 0 arrivals, 1 arrival, and so
on.
Compute the number of restaurants that expect to have x cars.
x (# Number of x (# Number of
of cars) restaurants of cars) restaurants
c
0
9
14
10
11
12
3
5
6
4
5
6
14
15
16
+
3
9
18
27
32
32
7
27
8
20
(Type whole numbers.)
(c) Compare these results with the number of arrivals after the advertising. Does it appear
the advertising was effective? Why?
What is the observed total number of arrivals?
13
14
15
16
8
4
.0022
.0009
.0003
2
1
0
0
0
Clear all
Check answer
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