1) Have the samples been collected independently or dependently? Answer the question and provide a reason why in one sentence. 2) Calculate the statistic not the test statistic you plan to use to estimate the stated parameter in part (1). Round this statistic to a whole number. 3) Provide at least one confounding variable that may have had an effect on this study’s results in one sentence.
1) Have the samples been collected independently or dependently? Answer the question and provide a reason why in one sentence. 2) Calculate the statistic not the test statistic you plan to use to estimate the stated parameter in part (1). Round this statistic to a whole number. 3) Provide at least one confounding variable that may have had an effect on this study’s results in one sentence.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
1) Have the samples been collected independently or dependently? Answer the question and provide a reason why in one sentence.
2) Calculate the statistic not the test statistic you plan to use to estimate the stated parameter in part (1). Round this statistic to a whole number.
3) Provide at least one confounding variable that may have had an effect on this study’s results in one sentence.
Transcribed Image Text:Transportation engineers determined that to help ease traffic, they would set up tolls for solo
drivers during rush hour times on Route I-66 inside the Capital Beltway (Route I-495).
Carpooling drivers with the proper Ezpass would drive free. The toll program began in
December 4, 2017. To test the claim that fewer vehicles would use Route I-66 after the program
began, a count of the number of vehicles was collected from two random samples. One sample
collected the number of daily vehicles for 12 randomly selected days prior to December 4, 2017
("Before") and a second sample collected the number of daily vehicles for another 12 randomly
selected days after December 4, 2017 (“After") (up to a year after). The data set is called
"Number of Vehicles 1." Use the significance level a =
= 0.05.
Transcribed Image Text:Row
Before
After
1
29876
22467
2
34563
26590
3
31485
12989
4
21968
31092
5
23186
509
6.
22972
25008
7
234
28805
8
22968
27691
9
31322
30009
10
32369
22624
11
17343
13527
12
16100
23448
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