Please can you help with these Statistic problems?

QUESTION 1

1. Your friend rolls a six sided die 100 times and gets the "two" side up 20 times. She says this means the probability of getting a "two" was 0.2. This is an example of what type of probability?
2. A.Empirical
3. B.Theoretical
4. C.Hexagonal
5. D.Nonsensical

5.882 points

QUESTION 2

1. In aZenercard testof ESP abilities, a sender draws 10 cards and a receiver guesses their shape, one at a time. Their are 5 shapes in equal numbersin a large shuffleddeck.Find the probability that the receiver gets 4 or more correct by chance.
2. A.18%
3. B.30%
4. C.12%
5. D.5%

5.882 points

QUESTION 3

1. Assume we choose a young adult in the region at random. The probability of them not having a HS diploma (or any other degree) is 0.12. The probability of them having a HS diploma (but nothing further) is 0.31. The probability of them having at least a bachelor's degree is 0.29
2. What is the probability that a randomly chosen young adult has at least a HS education? Assume that there is no degree below a HS diploma for this question.
4. A.0.29
5. B.0.12
6. C.0.88
7. D.0.31

5.88 points

QUESTION 4

1. What must be the probability that a randomly chosen young adult has some education beyond HS, but does not have a bachelor's degree?
2. A.0.12
3. B.0.31
4. C.0.28
5. D.0.30

5.88 points

QUESTION 5

1. In a survey about medicinal plant use, it was found that the chances of a person using any plant medicinally was 20%. If they used a plant, there was a 70% chance that it was topically. What are the chances that a randomly selected person from this sample used a plant medicinally in a non-topical manner?
2. A.6%
3. B.70%
4. C.14%
5. D.20%

5.882 points

QUESTION 6

1. Suppose the age of HVCC students is normally distributed, with an average age of 26 and a standard deviation of 4 years. What proportion of them would you expect to be older than 30?
2. A.0.50
3. B.0.16
4. C.0.30
5. D.0.84

5.882 points

QUESTION 7

1. What is the number of ways someone could get 3 out of 10 cards correct in a shape guessinggame?
2. A.120
3. B.720
4. C.80
5. D.30

5.882 points

QUESTION 8

1. Which of the following numbers could not be a probability?
2. A.0.92
3. B.0.34
4. C.0.12
5. D.1.3

5.882 points

QUESTION 9

1. In aZenercard testof ESP abilities, a sender draws 10 cards and a receiver guesses their shape, one at a time. Their are 5 shapes in equal numbersin a large shuffleddeck.Find the probability that the receiver gets 3 or less correct by chance.
2. A.92%
3. B.12%
4. C.88%
5. D.47%

5.882 points

QUESTION 10

1. In the above HVCC student age examples, what would a sampling distribution look like compared to the same study performed with sample sizes of 50? To be clear, you are describing how the sampling distribution of the 100 students per sample would look, compared to one that used sample sizes of 50.
2. A.Narrower and taller
3. B.Unchanged, as the mean is the same
4. C.It depends too much on the students you randomly select to make any inference
5. D.Wider and shorter

5.882 points

QUESTION 11

1. You flip a coin and roll a six sided die at the same time. What is the probability that you get a head on the coin and a 4, 5, or 6 on the die?
2. A.50%
3. B.2%
4. C.75%
5. D.25%

5.882 points

QUESTION 12

1. Reference.com says the average mid-size sedan width in 2007 was 71.4 inches. Assuming a standard deviation of 2 inches, in what percentile would my first car be placed if it had a width of 75.4 inches, compared to the 2007 model year mid-sized sedans?
2. A.96th
3. B.94th
4. C.97th
5. D.98th

5.882 points

QUESTION 13

1. In aZenercard testof ESP abilities, a sender draws 10 cards and a receiver guesses their shape, one at a time. Their are 5 shapes in equal numbersin a large shuffleddeck.Find the probability that the receiver gets 3 correct by chance.
2. A.30%
3. B.20%
4. C.40%
5. D.50%

5.882 points

QUESTION 14

1. In the previous question of HVCC student ages, what proportion of students would you expect to be between the ages of 18 and 34?
2. A.16%
3. B.82%
4. C.5%
5. D.95%

5.882 points

QUESTION 15

1. Let A and B be two events. Suppose the probability that neither A or B occurs is 2/3. What is the probability that one or both occur, to the nearest hundredth?
2. A.0.67
3. B.0.28
4. C.0.3
5. D.0.33

5.88 points

QUESTION 16

1. A sampling distribution that has a normal distribution indicates that the original population must be normally distributed:
2. A.False
3. B.True

5.882 points

QUESTION 17

1. In the previous questions on HVCC student ages, if a random selection of 100 students were drawn from the student body over and over again many times (with replacement), what would you expect the mean age and standard error of the sampling distribution to be?
3. A.26 0.4 yrs
4. B.26 2 yrs
5. C.26 4 yrs
6. D.28 0.4 yrs