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I have three statistics questions that needs correct answers ASAP. Thank you. They are attached as pictures below. I just need correct answers.

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A recent General Social Survey asked 783 Americans if they found their job interesting and if they

were satisfied in their job.

Attempt due: Apr 24 at 3.10pm

1 Hour, 31 Minutes, 9 Seconds

vals

The results are given in the table below.

ferences

24/7 Proctoring Support

The rows are the response to the question about finding their job interesting and the columns are

the response to the question about being satisfied in their job.

e Calculator

Satisfied in Job, Yes

Satisfied in Job, No

Live Chat

Job Interesting, Yes

Job Interesting, No

680

29

Phone

39

35

Is there a difference in the true proportion of Americans who find their job interesting and are

satisfied in their job?

a. What type of problem is this? [Select ]

b. What proportion of participants are satisfied in their job? (Select]

<
c. You are going to perform McNemar's Test. What is the sign in the alternative hypothesis?
Note: In the answer choices "not =" stands for +
[ Select]
A
d. Calculate the test statistic. [
[ Select]
<
e. Given the following two statements:
I. The p-value = 0.2262. I can reject Ho and conclude that there is significant evidence of a
difference in the true proportion of Ameri Il app.honorlock.com is sharing your screen. Stop sharing
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Mastering
Question 4
Syllabus
15 pts
non
Question 8
acements
Time Running: Hide
Attempt due. Apr 24 at 3:10
pm
1 Hour, 31 Minutes, 30 Seconds
Zoom Contences
How many text messages do twelfth grade students send on average on a typical day? You think it is
around 20 texts a day, but your friend thinks it is more than that. You decide to see if there is
significant evidence that twelfth grade students send on average more than 20 texts a day. A
random sample of 21 twelfth grade students is taken. The sample mean is 23.26 with a sample
standard deviation of 12.68. A boxplot of the data does not have strong skewness or outliers. The
hypotheses is as follows:
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Ho :μ = 20
Calculator
H, :p> 20

7 Live Chat

Phone

a. What is the parameter?

Fill in the bank.

the

students. [Select ]

number of text messages sent on a typical day by twelfth grade

b. The test statistic is 1.18, what is the p-value? (Select ]

h

c. In order to make an inference about the population, which assumption is necessary for the data to

be representative of the population? (Select]

d. For this significance test, you fail to reject Ho and find no significant evidence that the true mean

number of texts sent on a typical day by twelfth graders is greater than 20. What type of error could

you have made? [Select ]

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不需為每等等,

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Some summary statistics are Id= -3.833 and sd = 7.884.

Is there significant evidence of a difference (Exam 2 – Exam 3) in the Exam 2 and Exam 3 scores for

STA 2023 students? You are going to perform a significance test with the following hypotheses.

HO : μα = 0

Hud 70

Where

Hid is the true mean difference in the Exam 2 and Exam 3 scores for STA 2023 students.

38

664

a. What does ēd estimate? [Select ]

3

b. Is it reasonable to use t procedures here? [Select]

>

c. What is the t test statistic? [ [ Select ]

d. The p-value is 0.120. What strength of evidence is there for the alternative hypothesis?

[ Select]

e. What would be a Type II Error for this significance test?

[ Select]

f. Based on the p-value of 0.120 for this significance test, what would you predict for the 95%

confidence interval calculated on the same set of data? [Select ]

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Question 3

18 pts

Question 7

Question 8

our mes

Honete

In a recent STA 2023 class a random sample of 12 students were selected and their Exam 2 and

Exam 3 scores recorded. The data is in the table below.

Time Running Hide

Attempt due: Apr 24 at 3:10pm

1 Hour, 31 Minutes, 55 Seconds

GatorEvals

Student

1

2

3

28

4

ол

6

7

8

9

10

Zoom Conferences

Exam 2

11

91

12

76

97

73

24/7 Proctoring Support

67

94

94

58

82

58

Exam 3

97

82

79

82

97

87

70

88

97

63

E Calculator

97

73

Difference

94

9

82

-6

0

-14

-3

6

-3

-5

-15

-15

57 Live Chat

3

-3

Phone

Dotplots of the data are given below.

60

66

72

84

78

Exam 2

90

96

65

70

:

75

85

80

Exam 3

90

95

-16

-12

-8

0

4

8

Difference

Some summary statistics are ūd=-3.833 and sd = 7.884.

Is there significant evidence of a difference (Exam 2 – Exam 3) in the Exam 2 and Exam 3 scores for

STA 2023 students? You are going to perform a significance test with the following hypotheses.

Ho: ud

= 0

H: L2 0

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a. What is the parameter?

Fill in the bank.

the

number of text messages sent on a typical day by twelfth grade

students. [Select ]

2.

604

b. The test statistic is 1.18, what is the p-value? [Select]

e

c. In order to make an inference about the population, which assumption is necessary for the data to

be representative of the population? [Select ]

V

d. For this significance test, you fail to reject Ho and find no significant evidence that the true mean

number of texts sent on a typical day by twelfth graders is greater than 20. What type of error could

you have made? [Select ]

e. If instead you performed a significance test to see if the true mean number of texts sent a day was

different than 20, what level of significance would the 90% confidence interval on the same set of

data agree with? [Select]

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a. What type of problem is this?
[Select
b. What proportion of participants are satisfied in their job? (Select]
38
DOR
c. You are going to perform McNemar's Test. What is the sign in the alternative hypothesis?
664
Note: In the answer choices "not =" stands for +
[ Select ]
d. Calculate the test statistic. [Select]
e. Given the following two statements:
1. The p-value = 0.2262. I can reject Ho and conclude that there is significant evidence of a
difference in the true prop tion Americans who find their job interesting and are satisfied in
their job.
II. One of the assumptions that is met for this McNemar's Test is that 29 + 39 = 68, which is at least
30.
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Which of the statements are true? [Select ]
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standard deviation

statistics

Binomial Distribution

algebraic operations

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