1-A small sample of computer operators shows monthly incomes of $1,950, $1,885, $1,965,

$1,940, $1945, $1895, $1,890 and $1,925. The class width of the computer operators’ sample

with 5 classes is $16.

True

False

2-The frequencies of favourite car colors (White, Black, Grey, Red) can be represented using a

histogram.

True

False

3-The following Table describes a probability distribution:

x

0

1

2

3

P(x)

0.15 0.18 0.32 0.35

True

False

4-The expected value of a discrete random variable represents the mean value of the outcomes.

True

False

5-If for a distribution Q1=13, Q2=14 and Q3=15.5. Then the Interquartile range is 2.5

True

False

6-If A and B are mutually exclusive events, then P(A or B) = P(A) + P(B)

True

False

7-The random variable X has the following probability distribution:

x

0

1

P(x)

0.2

0.6

The variance of this distribution is

2

0.2

1.0

0.4

0.1

1.4

8-If a random variable X has a binomial distribution with μ =250 and 𝜎 =11.18. What is the

minimum usual value?

238.82

227.64

261.18

327.64

9-If the table below is probability distribution of random variable X. What is the value of k?

Sale price in thousand $ (X)

10

20

30

40

Probability p(X)

0.3

0.5

0.1

k

0.2

1.0

0.9

0.1

10-The scores on a recent statistics test are given in the frequency distribution below. What is the

relative frequency corresponding to the class 81-90?

Scores

Frequency

0-60

2

61-70

8

71-80

10

81-90

6

91-100

4

0.20

0.40

0.10

0.30

11-Stem plot of the following data 46, 65, 55, 43, 51, 48, 57, 30, 43, 49, 32, 56 is

3

02

4

3 689

5

1560

6

51

3

12

4

3 689

5

1560

6

51

3

02

4

33689

5

1567

6

5

3

02

4

3 689

4

13567

6

5

12-If the relative frequencies of class-intervals of a distribution are 0.20, 0.10, x, 0.25 & 0.15.

Then the value of the missing value x is

0.25

0.15

0.30

0.20

13-The temperatue of a cup of coffee is 65 oF. The given value is from a continuous data.

True

False

14-The total number of phone calls a sales representative makes in a month represents a discrete

data.

True

False

15-The midterm marks obtained by 4 students in a sample are as follows: 17, 24, 18, and 21.

What is the variance of this data.

10

6

20

3.16

16-A student had the following grades in the related courses:

Course

Mathematics

English language

PE

Weight

6

4

2

Grade

70

65

92

Given the weights of the courses, the weighted mean grade of the student is:

864

75.67

72

288

17-Listed below are the amounts of time (in months) that the employees of a restaurant have

been working at the restaurant. What is the median of this data?

22, 11, 55, 33, 99, 66

44 months

33 months

22 months

55 months

18-At one college, GPA’s are normally distributed with a mean of 2.6 and a standard deviation

of 0.4. According to empirical rule, What percentage of students at the college have a GPA

between 1.8 and 3.4?

99.7%

68%

95%

84.13%

19-Which type of sampling is used in the statement, ‘On the day of the last presidential election,

ABC News organized an exit poll in which specific polling stations were randomly selected and

all voters were surveyed as they left the premises.’

Convenience

Systematic

Stratified

Cluster

20-A firm uses trend projection and seasonal factors to simulate sales for a given time period. It

assigns “0” if sales fall, “1” if sales are steady, “2” if sales rise moderately and “3” if sales rise a

lot. The simulator generates the following output:

0 1 1 0 0 2 1 0 2 3

What is the probability that sales will fall?

0.30

0.20

0.40

0.10

21-A card is selected at random from a pack of 52 cards. What is the probability that the card is

either an ace or red color?

7/13

0

3/13

1/13

22-A box of 600 bulbs contains 12 defective bulbs. One bulb is taken out at random from this

box. Then the probability that it is non-defective bulb is

1/50

1/125

147/150

123/150

Don't use plagiarized sources. Get Your Custom Essay on

stat101 multiple chose

Just from $13/Page

Why Work with Us

Top Quality and Well-Researched Papers

We always make sure that writers follow all your instructions precisely. You can choose your academic level: high school, college/university or professional, and we will assign a writer who has a respective degree.

Professional and Experienced Academic Writers

We have a team of professional writers with experience in academic and business writing. Many are native speakers and able to perform any task for which you need help.

Free Unlimited Revisions

If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.

Prompt Delivery and 100% Money-Back-Guarantee

All papers are always delivered on time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.

Original & Confidential

We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.

24/7 Customer Support

Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.

Try it now!

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.

Essays

No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.

Admissions

Admission Essays & Business Writing Help

An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.

Reviews

Editing Support

Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.

Reviews

Revision Support

If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.