A tire manufacturer tested the braking performance of one of its new tire models on a test track. The company tried the tires on 8 different cars at a defined speed, recording the stopping distance for each car on both wet and dry pavement. Results are shown below for Stopping Distance in feet: Dry Wet Car # Pavement Pavement 1 150 201 2 147 220 3. 136 192 4 134 146 130 182 6. 134 173 134 202 8 128 180 The company claimed that the stopping distance on wet pavement was less than 60 feet versus dry pavement for its new model of tire. The claim being tested is Ho: HWet- Hdry = 60 versus H : HWet- Hdry < 60 at the 0.05 level of significance. Which one of the following is the correct value of the test statistic to use and the definition of the rejection region? O The value of the test statistic is -1.20 and the rejection region is t < -1.746 O The value of the test statistic is -1.45 and the rejection region is t< -1,895 The value of the test statistic is -1.20 and the rejection region is t < -1.761 O The value of the test statistic is -1.45 and the rejection region is t< -2.306 O The value of the test statistic is -1.20 and the rejection region is t < -2,145
A tire manufacturer tested the braking performance of one of its new tire models on a test track. The company tried the tires on 8 different cars at a defined speed, recording the stopping distance for each car on both wet and dry pavement. Results are shown below for Stopping Distance in feet: Dry Wet Car # Pavement Pavement 1 150 201 2 147 220 3. 136 192 4 134 146 130 182 6. 134 173 134 202 8 128 180 The company claimed that the stopping distance on wet pavement was less than 60 feet versus dry pavement for its new model of tire. The claim being tested is Ho: HWet- Hdry = 60 versus H : HWet- Hdry < 60 at the 0.05 level of significance. Which one of the following is the correct value of the test statistic to use and the definition of the rejection region? O The value of the test statistic is -1.20 and the rejection region is t < -1.746 O The value of the test statistic is -1.45 and the rejection region is t< -1,895 The value of the test statistic is -1.20 and the rejection region is t < -1.761 O The value of the test statistic is -1.45 and the rejection region is t< -2.306 O The value of the test statistic is -1.20 and the rejection region is t < -2,145
Chapter5: Decimals
Section5.6: Ratios And Rate
Problem 484E: A 16-ounee chocolate mocha coffee with whipped cream contains 470 calories, 18 grams of fat, 63...
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Transcribed Image Text:A tire manufacturer tested the braking performance of one of its new tire models on a test track.
The company tried the tires on 8 different cars at a defined speed, recording the stopping distance
for each car on both wet and dry pavement. Results are shown below for Stopping Distance in feet:
Dry
Wet
Car #
Pavement Pavement
1
150
201
147
220
136
192
134
146
130
182
6.
134
173
134
202
8
128
180
The company claimed that the stopping distance on wet pavement was less than 60 feet versus dry
pavement for its new model of tire. The claim being tested is Ho: HWet Hdry = 60 versus H :
HWet- Hdry < 60 at the 0.05 level of significance. Which one of the following is the correct value of
the test statistic to use and the definition of the rejection region?
O The value of the test statistic is -1.20 and the rejection region is t < -1.746
O The value of the test statistic is -1.45 and the rejection region is t < -1.895
O The value of the test statistic is -1.20 and the rejection region is t < -1.761
O The value of the test statistic is -1.45 and the rejection region is t < -2.306
O The value of the test statistic is -1.20 and the rejection region is t < -2.145
4.
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