Please collect the data and draw your assumptions.    Using the raw data  select the sample that represents the breaking distance of specific cars. Let X represent the number of cars whose breaking distance was less than 130 feet. Use this information to find the confidence interval for the percentage of cars whose breaking distance is less than 130 feet. n = ____________   x = ____________   State your assumption:    In words, define the random variable (sample proportion).   State the estimated distribution to use.

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Confidence Interval (Breaking Distance of Cars)  

Please collect the data anddrawyour assumptions.  

  1. Using the raw data  select the sample that represents the breaking distance of specific cars. Let X represent the number of cars whose breaking distance was less than 130 feet. Use this information to find the confidence interval for the percentage of cars whose breaking distance is less than 130 feet.
  2. n= ____________  
  3. x= ____________  

State your assumption:  

  1. In words, define the random variable (sample proportion).  
  2. State the estimated distribution to use.  

 

Find the Error and Confidence Interval

  1. How much area is in both tails (combined)? α = _____  
  2. How much area is in each tail? α/2 = _____
  3. What is z?2 =    
  4. Construct the interval: 
  5. Error: _____ 
  6. Confidence Interval: _____  
  7. Fill in the blanks on the graph with the area in each section. Then, fill in the number line with the upper and lower limits of the confidence interval and the sample proportion.  

  

10.  Fill in the table:  

Confidence Level  

Error  

Confidence Interval  

50%  

  

  

80%  

  

  

95%  

  

  

99%  

  

  

Please review the following data and answer the listed questions.
WEIGHT
LENGTH
CITY
HIGHWAY
(mph)
34
(mph)
(pounds) (inches)
2560
CAR
SIZE
BRAKING CYLINDERS
Chev Aveo
Small
154
133
4
25
Honda Civic
Small
2740
177
136
4
25
36
Mitsubishi Lancer
Small
3610
177
126
4
22
28
VW Jetta
Small
3225
179
137
4
29
40
2895
177
138
4
25
33
Hyundai Elantra
Kia Rio
Small
Small
2615
167
132
4
27
35
Subaru Impreza
Small
3110
180
135
4
20
26
Ford Fusion
Midsize
3320
191
136
4
20
28
Nissan Altima
Midsize
3215
190
136
4
23
Nissan Maxima
Midsize
3555
191
128
19
26
140
4
21
30
Midsize
Midsize
Honda Accord
3270
194
Volvo S60
3465
180
140
19
28
VW Passat
Midsize
3465
188
135
4
19
29
Midsize
3530
189
137
21
31
Toyota Camry
Toyota Avalon
Hyundai Azera
Cadillac DTS
3600
197
139
6.
19
28
Large
Large
Large
Large
Large
Large
Large
3835
193
134
18
26
4085
208
145
8
15
23
4415
215
143
8.
16
24
Lincoln Town
4170
200
131
6.
18
26
Dodge Charger
Merc Gr Marq
4180
212
140
16
24
Buick Lucerne
4095
203
143
17
25
Transcribed Image Text:Please review the following data and answer the listed questions. WEIGHT LENGTH CITY HIGHWAY (mph) 34 (mph) (pounds) (inches) 2560 CAR SIZE BRAKING CYLINDERS Chev Aveo Small 154 133 4 25 Honda Civic Small 2740 177 136 4 25 36 Mitsubishi Lancer Small 3610 177 126 4 22 28 VW Jetta Small 3225 179 137 4 29 40 2895 177 138 4 25 33 Hyundai Elantra Kia Rio Small Small 2615 167 132 4 27 35 Subaru Impreza Small 3110 180 135 4 20 26 Ford Fusion Midsize 3320 191 136 4 20 28 Nissan Altima Midsize 3215 190 136 4 23 Nissan Maxima Midsize 3555 191 128 19 26 140 4 21 30 Midsize Midsize Honda Accord 3270 194 Volvo S60 3465 180 140 19 28 VW Passat Midsize 3465 188 135 4 19 29 Midsize 3530 189 137 21 31 Toyota Camry Toyota Avalon Hyundai Azera Cadillac DTS 3600 197 139 6. 19 28 Large Large Large Large Large Large Large 3835 193 134 18 26 4085 208 145 8 15 23 4415 215 143 8. 16 24 Lincoln Town 4170 200 131 6. 18 26 Dodge Charger Merc Gr Marq 4180 212 140 16 24 Buick Lucerne 4095 203 143 17 25
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