Question

The probability that a student of Computer science passes a programming test is 2/3 and the probability that he passes in both programming and statistics test is 14/45. The probability that he passes at least one test is 4/5.

Provide your answers in 2 d.p (decimal point) without space in between the values

What is the probability that he passes in statistics test?

Answer #1

In Mr. ERIZ’s class, the probability of student who likes
Mathematics subject is 0.5 and the probability who likes both
Mathematics and Statistics subjects is 0.25.
If one student is chosen at random, what is the probability
that this student likes Statistics given that he/she also like
Mathematics subject?
If the probability of students who likes Statistics is 0.45,
are the events ‘like Mathematics subject’ and ‘like Statistics
subject’ independent? Justify your answer. (4
marks)
Are the events ‘likes Mathematics’...

1. The probability that a student has a Visa card (event V) is
0.30. The probability that a student has a MasterCard (event M) is
0.40. The probability that a student has both cards is 0.12. (1)
Find the probability that a student has either a Visa card or a
MasterCard. (2) In this problem, are V and M independent? Why?
2.
This is a contingency table describes 100 business students.
Gender
Major
Female(F)
Male(M)
Accounting (A)
22
28
Economics(E)...

In an examination the probability distribution of scores
(X) can be approximated by normal distribution with mean
63.2 and standard deviation 7.6.
*Please explain how you got your answers.
1) Suppose one has to obtain at least 55 to pass the
exam. What is the probability that a randomly selected student
passed the exam? [Answer to 3 decimal places]
Tries 0/5
2) If two students are selected randomly what is the
chance that both the students failed? [Answer to 3...

Answers to Multiple-Choice Problems: A student
wants to see if the correct answers to multiple choice problems are
evenly distributed. She heard a rumor that if you don't know the
answer, you should always pick C. In a sample of 100
multiple-choice questions from prior tests and quizzes, the
distribution of correct answers are given in the table below. In
all of these questions, there were four options {A, B, C, D}.
Correct Answers (n = 100)
A
B
C...

#46 In a survey of 2000 adults 50 years and older of whom 20%
were retired and 80% were pre-retired, the following question was
asked: Do you expect your income needs to vary from year to year in
retirement? Of those who were retired, 23% answered no, and 77%
answered yes. Of those who were pre-retired, 28% answered no, and
72% answered yes. If a respondent in the survey was selected at
random and had answered yes to the question,...

1/The time it takes me to wash the dishes is uniformly
distributed between 6 minutes and 14 minutes.
What is the probability that washing dishes tonight will take me
between 9 and 10 minutes?
Give your answer accurate to two decimal places.
2/A local bakary has determined a probability distribution for
the number of cheesecakes that they sell in a given day.
X= #sold
0
5
10
15
20
Probability
0.29
0.26
0.27
...?
0.06
What is the probability of...

1. A random number generator is used to select a number from 1
to
500 ?(inclusively).
What is the probability of selecting the number 595
?
What is the probability?
2.Identify the sample space of the probability experiment and
determine the number of outcomes in the sample space.
-Randomly choosing an even number between 10 and 20,
inclusive
The sample space is?
(Use a comma to separate answers)
There are _____ outcomes in the sample space
3. Determine the number...

In a sample of 18 students at East High School the following
number of days of absences were recorded for the previous semester:
4, 3, 1, 0, 4, 2, 3, 0, 1, 2, 3, 0, 4, 1, 1, 5, 1, 1. Manually
compute the mean, median, and range of this sample. Show work.
(Round values to one decimal place)
10) The following data represent the bachelor degrees of some
CEO's who work in the NYC area. Degree Number Accounting 19...

Sixth-Grade Reading Test
Scores
79
74
78
70
80
72
75
80
83 80
74
73
70
74
81
75
81
82
76 71
76
74 81
74
74
77
76
74
80 76
Refer to the data in Exercise 1 above. Perform a
Kolmogorov-Smirnov one-sample test to examine the normality of this
sample of scores. Your response should be organized according to
the 8 steps in hypothesis testing. Report your findings. (10
points)
Hypothesis...

1.
A random number generator is used to select a number from 1
to
500 ?(inclusively).
What is the probability of selecting the number 595
?
What is the probability?
2.Identify the sample space of the probability experiment and
determine the number of outcomes in the sample space.
-Randomly choosing an even number between 10 and 20,
inclusive
The sample space is?
(Use a comma to separate answers)
There are _____ outcomes in the sample space
3. Determine the number...

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