Question
In: Statistics and Probability
Arandomsampleofthebirthweightsof24babieshasameanof3103 grams and a standard deviation of 696 grams. Construct a 95% confidence interval estimate of...
Arandomsampleofthebirthweightsof24babieshasameanof3103 grams and a standard deviation of 696 grams. Construct a 95% confidence interval estimate of the mean birth weight for all such babies.
Solutions
Expert Solution
Solution :
Given that,
= 3103
s =696
n =24
Degrees of freedom = df = n - 1 = 24- 1 = 23
a ) At 95% confidence level the t is ,
= 1 - 95% = 1 - 0.95 = 0.05
/
2= 0.05 / 2 = 0.025
t
/2,df = t0.025,23 = 2.069 ( using student t
table)
Margin of error = E = t/2,df
* (s /
= 2.069 * (696 /
= 293.9
The 95% confidence interval mean is,
- E < 
<
+ E
3103 - 293.9 <
< 3103+ 293.9
2809.1 <
< 3396.9
orchestra answered 3 years agoRelated Solutions
Arandomsampleofthebirthweightsof24babieshasameanof3103 grams and a standard deviation of 696 grams. Construct a 95% confidence interval estimate of...
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Date
AllOrd
Aoret
AOSD
AUDUSD
AUDSD
TV (m)
IR (%)
MV
PE
2000/4/28
3085.1
0.0703
0.5909
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85. 68. 63. 94. 41. 84. 74. 64. 69. 72. 55. 68. 58. 78. 69. 66. 64.
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Construct a 95% confidence interval to estimate the population
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----- A 95% confidence interval estimates that the population
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___ and an upper limit of ___
????
Refer to the accompanying data set and construct a 95% confidence interval estimate of the mean...
Refer to the accompanying data set and construct a 95%
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Males
Females
84
80
77
97
52
60
59
65
51
55
59
79
52
78
75
85
50
86
65
59
70
34
62
68
65
85
76
74
79
75
65
63
68
68
99
81
44
62
86
64
70
82
67
85
70
68
71...
Refer to the accompanying data set and construct a 95% confidence interval estimate of the mean...
Refer to the accompanying data set and construct a 95%
confidence interval estimate of the mean pulse rate of adult
females; then do the same for adult males. Compare the results.
Males Females
84 78
71 95
49 56
63 64
53 54
61 82
51 81
75 88
54 89
62 57
69 36
59 65
62 86
78 74
80 75
65 64
65 68
94 77
45 61
86 61
71 82
63 83
74 68
74 ...
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84 81
72 97
51 56
62 67
55 54
64 81
51 78
79 87
53 86
63 56
71 37
59 67
63 84
81 77
85 78
64 61
65 67
96 81
45 58
89 65
69 85
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