The data shown below represent the repair cost for a low-impact collision ina simple random sample of mini- and micro-vehicles. Complete parts (a) through (d) below. $3148 $1758 Click here to view the table of critical t-values. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. $1024 $743 $2053 $663 $2647 $773 $1390 $3345

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The data shown below represent the repair cost for a low-impact collision in a simple random sample of mini- and micro-vehicles. Complete parts (a) through (d) below.
$3148
$1758
$743
$2053
Click here to view the table of critical t-values.
$1024
$663
$2647
$773
$3345
$1390
Click here to view page 1 of the standard normal distribution table.
Click here to view page 2 of the standard normal distribution table.
Transcribed Image Text:The data shown below represent the repair cost for a low-impact collision in a simple random sample of mini- and micro-vehicles. Complete parts (a) through (d) below. $3148 $1758 $743 $2053 Click here to view the table of critical t-values. $1024 $663 $2647 $773 $3345 $1390 Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table.
(d) Suppose you obtain a simple random sample of size n= 10 of a specific type of mini-vehicle that was in a low-impact collision and determine the cost of repair. Do you think a
95% confidence interval would be wider or narrower? Explain.
O A. Narrower, because there is less variability in the data because any variability caused by the different types of vehicles has been removed.
OB. Wider, because there is more variability in the data because variability in the repair cost of the car has been added.
OC. Wider, because taking a second random sample will always lead to a wider confidence interval.
OD. Narrower, because taking a second random sample will always lead to a narrower confidence interval.
Transcribed Image Text:(d) Suppose you obtain a simple random sample of size n= 10 of a specific type of mini-vehicle that was in a low-impact collision and determine the cost of repair. Do you think a 95% confidence interval would be wider or narrower? Explain. O A. Narrower, because there is less variability in the data because any variability caused by the different types of vehicles has been removed. OB. Wider, because there is more variability in the data because variability in the repair cost of the car has been added. OC. Wider, because taking a second random sample will always lead to a wider confidence interval. OD. Narrower, because taking a second random sample will always lead to a narrower confidence interval.
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