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Q 1/50
Score 0
What do you call the set of all people, objects, events, or ideas you want to investigate?
30
Sample
Statistic
Data
Population
Q 2/50
Score 0
Which of the following symbols denotes sample standard deviation?
30
σ
µ
x̄
s
50 questions
Q.
What do you call the set of all people, objects, events, or ideas you want to investigate?
1
30 sec
Q.
Which of the following symbols denotes sample standard deviation?
2
30 sec
Q.
Which of the following symbols denotes population mean?
3
30 sec
Q.
Which of the given choices is the best point estimate of the population mean?
4
30 sec
Q.
It is also called as “Positional Average”
5
30 sec
Q.
It is also called as “Nominal Average”
6
30 sec
Q.
The descriptive measures computed from a population are called
7
30 sec
Q.
In sampling distribution of sample means, the means of the samples are less or greater than the mean of the population. What is the difference between sample mean and population mean called?
8
30 sec
Q.
How many possible of size n=3 can be drawn from a population of size 12
9
30 sec
Q.
Which sample size will give a smaller standard error of the mean?
10
30 sec
Q.
“As the sample size n increases, the shape of the distribution of the sample means taken with replacement from a population with mean µ and the standard deviation σ will approach a normal distribution” - This statement is better known as
11
30 sec
Q.
This consists of means derived from all possible random samples of specific size obtained from a population.
12
30 sec
Q.
What is the chance of an event happening called?
13
30 sec
Q.
Which of the following explains why the table below is not a probability distribution?
14
30 sec
Q.
Which of the following is NOT an example of discrete random variable?
15
30 sec
Q.
It is a way of presenting probability distribution using vertical bars placed side by side.
16
30 sec
Q.
Which of the following statement is TRUE?
17
30 sec
Q.
Which of the following quantities is equal to the expected value of the discrete random variable?
18
30 sec
Q.
Which of the following is an example of continuous random variable?
19
30 sec
Q.
If value X is less than µ of standard normal distribution then the
20
30 sec
Q.
In a standard normal probability distribution, z-score of distribution will be zero if
21
30 sec
Q.
Value which is used to measure distance between mean and random variable X in terms of standard deviation is called___.
22
30 sec
Q.
A survey will be given to 100 students randomly selected from the freshmen class at MNHS. What is the population?
23
30 sec
Q.
A survey will be given to 100 students randomly selected from the freshmen class at MNHS. What is the sample?
24
30 sec
Q.
Fifty bottles of water were randomly selected form a large collection bottles in a company’s warehouse. These fifty bottles are referred to as the ____.
25
30 sec
Q.
A mean is known as a statistic if it is computed from the ____.
26
30 sec
Q.
An investor invests on a security bank with an 80% chance of earning Php 600,000 profit and a 20% chance of losing the investment worth Php 500,000. What is the expected profit?
27
60 sec
Q.
What is the area that corresponds to z = 1.42?
28
30 sec
Q.
What is the area between z=0 and z = 0.93?
29
30 sec
Q.
What is the area that corresponds to z = - 2.32?
30
30 sec
Q.
What is the area between z =0 and z = - 2.36
31
30 sec
Q.
What is the area between z = - 1.00 and z = 1.00?
32
30 sec
Q.
What is the area that corresponds to z = 0.64?
33
30 sec
Q.
What is the area that corresponds to z = -3.02?
34
30 sec
Q.
Given µ = 62 and σ = 8, what is the z-value that corresponds to X = 42?
35
45 sec
Q.
Given µ = 62 and σ = 8, what is the z-value that corresponds to X = 70?
36
45 sec
Q.
Given µ = 62 and σ = 8, what is the z-value that corresponds to X = 78?
37
45 sec
Q.
Given µ = 62 and σ = 8, what is the z-value that corresponds to X = 82?
38
45 sec
Q.
Given µ = 62 and σ = 8, what is the z-value that corresponds to X = 50?
39
45 sec
Q.
What is the proportion of the area above z= -1.00?
40
45 sec
Q.
The number of cars sold per day at a local car dealership, along with its corresponding probabilities, is shown in the succeeding table. What is standard deviation of the above distribution?
41
120 sec
Q.
The number of cars sold per day at a local car dealership, along with its corresponding probabilities, is shown in the succeeding table. What is the mean of the given probability distribution?
42
60 sec
Q.
The number of cars sold per day at a local car dealership, along with its corresponding probabilities, is shown in the succeeding table. What is the variance of the given probability distribution?
43
120 sec
Q.
Value which is obtained by multiplying possible values of random variable with probability of occurrence and is equal to weighted average is called
44
30 sec
Q.
What is the area to the left of z= - 1.50?
45
60 sec
Q.
What is the area between the mean and z = 1.50?
46
30 sec
Q.
What is the area at least z=1.00
47
30 sec
Q.
Which of the following symbols denotes population size?
48
30 sec
Q.
Which of the following symbols denotes sample size?
49
30 sec
Q.
How many possible of size n=4 can be drawn from a population of size 8?
