Which statement is not true about the 95 confidence level?
a. Confidence intervals computed by using the same procedure will include the true population value for 95 of all possible random samples taken from the population.
b. The procedure that is used to determine the confidence interval will provide an interval that includes the population parameter with probability of 0.95.
c. The probability that the true value of the population parameter falls between the bounds of an already computed confidence interval is roughly 95.
d. If we consider all possible randomly selected samples of the same size from a population, the 95 is the percentage of those samples for which the confidence interval includes the population parameter.
Q. 2A card is drawn at random from a standard 52-card deck. The conditional probability that the card is a 2 given that a 2 or a 3 was drawn is
a. 20.0 (1/5)
b. 25.0 (1/4)
c. 33.3 (1/3)
d. 50.0 (1/2)
Q. 3Which statement is not true about confidence intervals?
a. A confidence interval is an interval of values computed from sample data that is likely to include the true population value.
b. An approximate formula for a 95 confidence interval is sample estimate margin of error.
c. A confidence interval between 20 and 40 means that the population proportion lies between 20 and 40.
d. A 99 confidence interval procedure has a higher probability of producing intervals that will include the population parameter than a 95 confidence interval procedure.
Q. 4A card is drawn at random from a standard 52-card deck. The conditional probability that the card is a King given that a face card (Jack, Queen, or King) was drawn is
a. 20.0 (1/5)
b. 25.0 (1/4)
c. 33.3 (1/3)
d. 50.0 (1/2)
Q. 5Some statistical procedures move from population to sample; some move from sample to population. For each of the following procedures, determine the correct direction. A census takes information from the ___________ to the ____________.
a. sample; population
b. population; sample
c. neither
Q. 6Two standard 52-card decks are shuffled and two cards are picked at random one card from each deck. The probability that two Hearts are drawn is
a. 5.9
b. 6.3
c. 25.0
d. 50.0
Q. 7Some statistical procedures move from population to sample; some move from sample to population. For each of the following procedures, determine the correct direction. Confidence intervals take information from the ___________ to the ____________.
a. sample; population
b. population; sample
c. neither
Q. 8A standard 52-card deck is shuffled and 2 cards are picked from the top of the deck. The probability that the first card is a face card (Jack, Queen, King) and the second card is not a face card is
a. 5.3
b. 17.8
c. 18.1
d. 59.2
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