Question

Question 9-15 are based on the random sample below which is obtained to test the following hypothesis about the population mean. Test the hypothesis that the mean is less than 80. | ||||||||

80 | 100 | 81 | 93 | 80 | 57 | 98 | 90 | |

71 | 56 | 58 | 78 | 59 | 55 | 55 | 77 | |

72 | 78 | 56 | 94 | 98 | 59 | 93 | 86 | |

89 | 62 | 60 | 66 | 59 | 71 | 96 | 97 | |

94 | 69 | 64 | 77 | 87 | 77 | 64 | 90 | |

90 | 95 | 98 | 99 | 56 | 69 | 72 | 81 | |

95 | 89 | 97 | 83 | 98 | 58 | 88 | 90 | |

90 | 57 | 99 | 80 | 88 | 58 | 69 | 75 | |

85 | 91 | 67 | 70 | 73 | 86 | 83 | 62 | |

90 | 88 | 75 | 56 | 57 | 57 | 92 | 67 | |

70 | 67 | 71 | 64 | 70 | 68 | 99 | 83 | |

91 | 98 | 100 | 67 | 75 | 92 | 79 | 70 | |

92 | 97 | 59 | 70 | 68 | 59 | 71 | 99 | |

13 | Given α = 0.05, the critical value for the test is, | ||||

a | 2.201 | ||||

b | 1.983 | ||||

c | 1.768 | ||||

d | 1.660 | ||||

14 | The approximate p-value for the test is, | ||||

a | 0.128 | ||||

b | 0.092 | ||||

c | 0.078 | ||||

d | 0.066 | ||||

15 | Based on the p-value in the previous question, | ||||

a | Reject H₀ at α = 0.05; do not reject H₀ at α = 0.01 | ||||

b | Reject H₀ at α = 0.01; do not reject H₀ at α = 0.05 | ||||

c | Reject H₀ at α = 0.10; do not reject H₀ at α = 0.05 | ||||

d | reject H₀ at α = 0.10; reject H₀ at α = 0.05 |

Answer #1

Consider the below vector x, which you can copy and
paste directly into Matlab. The vector contains the final grades
for each student in a large linear algebra course.
x = [61 52 63 58 66 92 64 55 76 60 70 78 76 73 45 63
97 70 100 76 50 64 42 100 67 81 81 59 68 62 72 99 66 76 81 59 47 84
67 75 63 86 73 44 51 69 48 74 61...

have a java application need to create an application which is
able to do some analysis on temperature data stored in a data file.
You will be given the “temperatures.dat” data file which contains
the data you must analyze. The analysis you’ll need to do is:
Total number of data points
Find coldest temperature
Find warmest temperature
Find average temperature
Find the frequency of each temperature
Find the most frequent temperature
Find the least frequent temperature
All classes must be...

Below represent scores on an exam, each entry one score for one
student
40
99
59
98
63
63
64
65
67
35
67
67
68
70
71
71
71
46
72
72
60
73
74
74
74
75
97
75
62
76
76
76
76
76
77
57
77
98
77
63
78
78
78
79
79
80
80
80
80
80
81
81
92
81
93
82
82
83
83
83
83
83
83
83
84
84
84...

TestScore
53 53 56 56 56 58 58 58 59 59 59 60 60 62 63 63 63 64 65 65 66
67 67 67 67 68 69 69 69 69 71 71 72 72 72 72 73 73 73 73 73 74 75
75 75 76 76 76 76 77 77 77 77 77 78 78 78 79 79 79 79 80 80 80 80
80 80 81 81 81 82 82 83 83 83 83 84 84 84...

Student Grades
Student
Test
Grade
1
76
62
2
84
90
3
79
68
4
88
84
5
76
58
6
66
79
7
75
73
8
94
93
9
66
65
10
92
86
11
80
53
12
87
83
13
86
49
14
63
72
15
92
87
16
75
89
17
69
81
18
92
94
19
79
78
20
60
71
21
68
84
22
71
74
23
61
74
24
68
54
25
76
97...

Test score of 40 students are listed below. Find the percentile for
the test score of 66.
30 35 43 44 47 48 54 55 56 57
59 62 63 65 66 68 69 69 71 72
72 73 74 76 77 77 78 79 80 81
81 82 83 85 89 92 93 94 97 98

TestScore
53
53
56
56
56
58
58
58
59
59
59
60
60
62
63
63
63
64
65
65
66
67
67
67
67
68
69
69
69
69
71
71
72
72
72
72
73
73
73
73
73
74
75
75
75
76
76
76
76
77
77
77
77
77
78
78
78
79
79
79
79
80
80
80
80
80
80
81
81
81
82
82
83
83
83
83
84
84
84...

Since we are attempting to examine the behavior of a class of
students, the behavior of an individual (as we calculated in
objective 1) is really of little concern to us. Assuming that there
are 30 students enrolled for a typical class, use the central limit
theorem to calculate the following:
• What would be the shape of the
distribution of the average class grade of these 30 students?
• What would be the average class
average of...

Use the pulse rates in beats per minute (bpm) of a random
sample of adult females listed in the data set available below to
test the claim that the mean is less than 77 bpm. Use a
0.01significance level
Click the icon to view the pulse rate data.
59 38
95 92
105 90
81 94
77 78
101 69
47 45
78 90
80 104
75 87
63 61
66 48
35 54
49 39
90 35
97 92...

The test scores of 40 students are listed below.
30
35 43 44 47 48 54 55 56 57
59
62 63 65 66 68 69 69
71 72
72
73 74 76 77 77 78 79 80 81
81 82 83 85 89
92 93 94 97
98
a)
Find the lower and upper quartiles for the data.
b)
Find the interquartile range.
c)
Draw the box-and-whisker diagram for the data.

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