Free Exam: stat 324 second exam second-term 26-27
Number of Questions in Test: 30
Number of Questions in Preview: 5
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[size=4]A traffic control engineer reports that 75% of the cars passing through a check point are from Riyadh city. If at this check point, five cars are selected at random.
The probability that none of them is from Riyadh city equals to :[/size]
The probability that none of them is from Riyadh city equals to :[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 2
[size=4]A traffic control engineer reports that 75% of the cars passing through a check point are from Riyadh city. If at this check point, five cars are selected at random.
[/size][size=4]The probability that four of them are from Riyadh city equals to :[/size]
[/size][size=4]The probability that four of them are from Riyadh city equals to :[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 3
[size=3]A traffic control engineer reports that 75% of the cars passing through a check point are from Riyadh city. If at this check point, five cars are selected at random.
[/size]
[size=3]The probability that at least four of them are from Riyadh city equals to [/size]
[/size]
[size=3]The probability that at least four of them are from Riyadh city equals to [/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 4
[size=3]A traffic control engineer reports that 75% of the cars passing through a check point are from Riyadh city. If at this check point, five cars are selected at random.
[/size]
[size=3]The expected number of cars that are from Riyadh city equals to :[/size]
[/size]
[size=3]The expected number of cars that are from Riyadh city equals to :[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 5
[size=3]A shipment of 20 digital voice recorders contains 5 that are defective. If 10 of them are randomly chosen (without replacement) for inspection.
[/size]
[size=3]The probability that 2 will be defective is:[/size]
[/size]
[size=3]The probability that 2 will be defective is:[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |