Stats Final
The weights of grapefruits........Use scenario 6-9 Which of the following is closest to the probability that a randomly selected grapefruit weights more than 1.25 lbs.
.0188
The weights of grapefruits........Use scenario 6-9 Which of the following is closest to the probability that the total weight of three randomly selected grapefruits is more than 3.4 lbs.
.0274
Suppose x is a continuous random variable taking values between 0 and 2.....density function below Use scenario 6-7 P(X>1.5) has value
.0625
Use scenario 6-1 The probability of at least........
.9375
The probability distribution.....Use scenario 6-6 the probability that x=1.5 is
0
Your friend Albert....Use scenario 6-10. What is the expected value of Z?
11.6
Suppose there are three balls in a box.....
3,4,5 all 1/3
A survey asks a random sample of 1500
A) .40
Sulé job is just.......
A) .8340
A CBS....Use Scenario 7-1 If you take a large number of SRS's of size 1190....
A) Low Bias
In the 2008 New Hampshire....
A) Parameter
Which of the following is correct? A) parameters describe population characteristics B) Parameters describe sample characteristics C) the population is a subset of the sample
A) Parameters describe population characterisitics
A variable whose value is a numerical...
A) a random variable
The distribution of values from a single sample of size n from a population is...........
A) the distribution of sample data
A poll shows that 60%...use scenario 6-16......If the reporter asks....
A)0.936
Use scenario 7-2 The statistic that has the lower variability.....
E) B and C have similar variability, and it is less variability of A
Which of the following is true about every random variable
II and III
Flip a coin 4x..... an expression that represents.....
P(Z ≤3)
There are twenty multiple-choice...... Use Scenario 6-12....the distribution
binomial with parameters n=20 and p=.25
Which of the following is not a random variable? A) The heights of randomly-selected buildings in New York City B) The suit of a card randomly-selected from a 52-card deck C) The number of children in randomly-selected households in the United States D) The amount of money won...... E) All of the above......
B) The suit of a card randomly-selected from a 52-card deck
A worn out bottling machine......Use Scenario 6-14 If you randomly select 20 bottles.....
B)0.19
A college basketball player makes 80%
C) 0.64
A survey conducted by Black Flag.......
C) Statistic
Below are dot plots of the values taken by three........use scenario 7-2 the statistic that has the largest bias.....
C) statistic C
The distribution of the value of a variable for all members of a population is.......
C) the population distribution of the variable
A college basketball player makes 5/6......
D) (1/6)^1*(5/6)^3
Which of the following is not a random variable? A) The number of heads.... B) The number of passengers.... C) The age of the driver... D) The response of randomly selected people to the question, "What is..... E) The response of randomly selected people to the question, "How many.....
D) The response of randomly selected people to the question, "What is.....
Your friend Albert....Use scenario 6-10. Here's Albert's game....
Up=1.6; op=1.2