What is a sample space?
A). A process that leads to well-defined results
B). A result of a single trial
C). Something that consists of outcomes
D). A set of all possible outcomes
D). A set of all possible outcomes
In a Binomial distribution, the outcomes of each trial must be ________ of one another.
Independent
Which is used when order matters?
A). nPr
B). binomcdf
C). nCr
D). invnorm
A). nPr
What forms the Rejection Tail?
A). The claim
B). The test statistic
C). The critical value
D). The p-value
C). The critical value
What measuring scale does temperature fall under?
A). Nominal
B). Ordinal
C). Ratio
D). Interval
D). Interval
Which of the following numbers could be a probability?
A). -0.00002
B). 20
C). 2.021
D). 27%
D). 27%
A firework stand has 150 rockets. The probability of each not firing is 0.05. Find the probability that exactly 10 will fail.
P(10) binompdf(150,0.05,10) = 0.087
How many combinations can you make 8 cards out of 17 cards?
A). 24,310
B). 980,179,200
C). 300
D). 214
A). 24,310
Find the critical value.
Significance level = 0.05
C.V. = +/- 1.645
The heights of plants in a garden can be best described as...
A). Qualitative and discrete
B). Quantitative and discrete
C). Qualitative and continuous
D). Quantitative and continuous
D). Quantitative and continuous
A die is rolled and a coin is tossed, find the probability that the die shows an odd number and the coin shows the head side of the coin.
A). 1/4
B). 3/5
C). 1/16
D). 1/2
A). 1/4
0.011
How many permutations of 3 different letters are there, if chosen from the alphabet?
A). 2,600
B). 15,600
C). 3,700
D). 14,800
B). 15,600
If the P-value is less than or equal to alpha, ______ the null.
If the P-value is greater than alpha, ______ the null.
A). Reject, Support B). Reject, Fail to Reject
C). Support, Reject D). Fail to Reject, Reject
B). Reject, Fail to Reject
T-Shirt sizes XS, S, M, L, XL for a club are best described as...
A). Qualitative
B). Ratio
C). Quantitative
D). Stratified
A). Qualitative
On a six-sided die, each side has a number between 1 and 6. What is the probability of rolling a 3 or a 4?
A). 1/6
B). 2/3
C). 1/3
D). 1/4
C). 1/3
2 in 6 both divided by two results in 1/3
A farmer plants 30 rows of soybeans. The probability of a plant not being fertilized is 0.04. Find the probability that less than 5 plants will be fertilized.
0.968
How many different ballots can be made for President, Vice President, Secretary, and Treasurer can be made if 32 people run?
A). 863,040 ballots & order doesn't matter
B). 35,960 ballots & order does matter
C). 35,960 ballots & order doesn't matter
D). 863,040 ballots & order matters
D). 863,040 ballots & order matters
If the test statistic falls in the critical region, you will ______ the null. If the test statistic does not fall in the critical region, you will ______ the null.
A). Support, Reject
B). Reject, Fail to Reject
C). Support, Fail to Reject
D). Fail to Reject, Reject
B). Reject, Fail to Reject
The organization of raw data by classes and frequencies is called ______.
A). A Class limit
B). An Outlier
C). A Frequency Distribution
D). A Relative Frequency
C). A frequency distribution
If a bag of balloons consists of 47 white balloons, 5 yellow balloons, and 18 black balloons. What is the probability that a balloon chosen randomly from the bag will be black?
A). 19%
B). 29%
C). 31%
D). 25%
B). 29%
18 / 62 = .29
A bee pollinates a dozen flowers a day. With the probability of the bee skipping a flower being 19%. What is the probability of the bee skipping more than half of the flowers in the field?
.985
Out of 15 pool balls, how could 6 pool balls be arranged?
A). 5,005 ways because order matters
B). 3,603,600 ways because order matters
C). 5,005 ways because the order doesn't matter
D). 3,603,600 ways because the order doesn't matter
C). 5,005 ways because the order doesn't matter
The average cost of owning a farm is $3,999 per acre not including equipment. A random survey of 65 farmers revealed an average cost of $1,350 with a population standard deviation of $535. Is there sufficient evidence to conclude that the average is greater than $3,999 per acre? Use a significance level = 0.05.
There is not enough evidence at a 5% level of significance to support the claim that the average cost of owning a farm is greater than $3,999 per acre.
Find the class boundary, midpoint, and width for the class. 43-47
Class Boundary = 42.5-47.5, midpoint = 45, Class width = 5