QUESTION 19 A manufacturer of automobile tires reported that among a shipment of 400 sent to a local distributor, 10 are slightly blemished. If Ahmed purchases 120 of these tires at randor from the distributor. On average, how many of these tires would Ahmed expect to be blemished? O 12 O 40 O 4 O 3

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QUESTION 19
A manufacturer of automobile tires reported that among a shipment of 400 sent to a local distributor, 10 are slightly blemished. If Ahmed purchases 120 of these tires at random
from the distributor. On average, how many of these tires would Ahmed expect to be blemished?
O 12
O 40
O 4
O 3
QUESTION 20
To estimate the average time it takes to assemble a certain computer component, the industrial engineer at an electronics firm timed 25 technicians in the performance of this
task, getting a mean of 12.7 minutes and a standard deviation of 2.1 minutes. Construct a 956 confidence interval of the actual average time required to do the job assuming
that the actual time follows a normal distribution.
Transcribed Image Text:WELCOME TO OLD TRAFFO kboard X C0D O Remaining Time: 1 hour, 22 minutes, 01 second. Question Completion Status: U.7077 O 0.9564 QUESTION 19 A manufacturer of automobile tires reported that among a shipment of 400 sent to a local distributor, 10 are slightly blemished. If Ahmed purchases 120 of these tires at random from the distributor. On average, how many of these tires would Ahmed expect to be blemished? O 12 O 40 O 4 O 3 QUESTION 20 To estimate the average time it takes to assemble a certain computer component, the industrial engineer at an electronics firm timed 25 technicians in the performance of this task, getting a mean of 12.7 minutes and a standard deviation of 2.1 minutes. Construct a 956 confidence interval of the actual average time required to do the job assuming that the actual time follows a normal distribution.
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