The National Safety Council (NSC). collects data on all kinds of accidents, including automobile collisions. Below is a breakdown of auto collisions in the United States by day of the week. Wednesday Day Percent of collisions Sunday Monday Day 15.7 Sunday 12.5 Number of 517 collisions Monday Tuesday 446 12.6 So, 15.7% of collisions occur on Sunday. Here is data from last year on the number of fatal auto collisions by days of the week from the state of California Tuesday 404 13.1 ● null and alternate hypotheses test statistic, critical value and/or p-value Wednesday So, there were 517 fatal collisions on Sundays last year. ● expected counts • reject or fail to reject the null hypothesis conclusion in plain English 438 Thursday 13.5 Friday 15.4 Thursday Friday 444 Saturday 522 17.2 Saturday 1. Does the distribution of fatal auto accidents in California differ from the distribution for all accidents in the United States? 545

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The National Safety Council (NSC). collects data on all kinds of accidents, including automobile collisions.
Below is a breakdown of auto collisions in the United States by day of the week.
Day
Percent of
collisions
Day
Sunday Monday
15.7
Sunday
Number of 517
collisions
12.5
●
Monday
Tuesday
446
12.6
Tuesday
So, 15.7% of collisions occur on Sunday.
Here is data from last year on the number of fatal auto collisions by days of the week from the state of
California
404
Wednesday
13.1
null and alternate hypotheses
test statistic, critical value and/or p-value
• expected counts
reject or fail to reject the null hypothesis
conclusion in plain English
Wednesday
So, there were 517 fatal collisions on Sundays last year.
438
Thursday
13.5
Friday
15.4
444
Thursday Friday
Saturday
522
17.2
Saturday
1. Does the distribution of fatal auto accidents in California differ from the distribution for all accidents in the
United States?
545
Transcribed Image Text:The National Safety Council (NSC). collects data on all kinds of accidents, including automobile collisions. Below is a breakdown of auto collisions in the United States by day of the week. Day Percent of collisions Day Sunday Monday 15.7 Sunday Number of 517 collisions 12.5 ● Monday Tuesday 446 12.6 Tuesday So, 15.7% of collisions occur on Sunday. Here is data from last year on the number of fatal auto collisions by days of the week from the state of California 404 Wednesday 13.1 null and alternate hypotheses test statistic, critical value and/or p-value • expected counts reject or fail to reject the null hypothesis conclusion in plain English Wednesday So, there were 517 fatal collisions on Sundays last year. 438 Thursday 13.5 Friday 15.4 444 Thursday Friday Saturday 522 17.2 Saturday 1. Does the distribution of fatal auto accidents in California differ from the distribution for all accidents in the United States? 545
2. Below is data on the number of vehicles involved in a fatal crash and city in California during 2019.
City
Single-ve Two-vehicle
hicle
crash
fatalities
Los Angeles 175
San Diego 61
San Jose
San
Francisco
Fresno
49
22
33
Sacramento 28
Long Beach 26
crash
fatalities
69
19
19
a
13
2. Is there enough evidence to support that the number of vehicles involved in a crash is related to the city in which
the accident occur?
null and alternate hypotheses
test statistic, critical value and/or p-value
expected counts
reject or fail to reject the null hypothesis
● conclusion in plain English
Transcribed Image Text:2. Below is data on the number of vehicles involved in a fatal crash and city in California during 2019. City Single-ve Two-vehicle hicle crash fatalities Los Angeles 175 San Diego 61 San Jose San Francisco Fresno 49 22 33 Sacramento 28 Long Beach 26 crash fatalities 69 19 19 a 13 2. Is there enough evidence to support that the number of vehicles involved in a crash is related to the city in which the accident occur? null and alternate hypotheses test statistic, critical value and/or p-value expected counts reject or fail to reject the null hypothesis ● conclusion in plain English
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