The number of cell phones per 100 residents in countries in Europe is given in table...

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Statistics

The number of cell phones per 100 residents in countries inEurope is given in table #9.3.9 for the year 2010.  Thenumber of cell phones per 100 residents in countries of theAmericas is given in table #9.3.10 also for the year 2010(\"Population reference bureau,\" 2013).  Find the 98%confidence interval for the different in mean number of cell phonesper 100 residents in Europe and the Americas.

Table #9.3.9: Number of CellPhones per 100 Residents in Europe

100

76

100

130

75

84

112

84

138

133

118

134

126

188

129

93

64

128

124

122

109

121

127

152

96

63

99

95

151

147

123

95

67

67

118

125

110

115

140

115

141

77

98

102

102

112

118

118

54

23

121

126

47

Table #9.3.10: Number of CellPhones per 100 Residents in the Americas

158

117

106

159

53

50

78

66

88

92

42

3

150

72

86

113

50

58

70

109

37

32

85

101

75

69

55

115

95

73

86

157

100

119

81

113

87

105

96

  1. ) State the random variable and the parameter inwords.

b.) If needed, state the null and alternative hypothesesand the level of significance and don't \"bump\" them into one line(refer to the textbook)

Ho :

HA :

a =

c.) State and check the assumptions for a hypothesistest

d.) Find the sample statistic, test statistic, andp-value, confidence interval

e.) Conclusion

Since the p-value……..fail to reject orreject   H o or confidence intervals...

f.) Interpretation ( statistical and realworld)

Answer & Explanation Solved by verified expert
4.2 Ratings (519 Votes)
Solution Final answers in the stipulated format are given below Backup Theory and Details of calculations follow at the end Part a Random variables X Number of Cell Phones per 100 Residents in Europe Y Number of Cell Phones per 100 Residents in Americas Answer 1 Parameter in words 1 average number of Cell Phones per 100 Residents in Europe 2 average number of Cell Phones per 100 Residents in Americas Answer 2 Part b Hypotheses Null H0 1 2 Vs HA 1 2 Answer 3 Part c Assumption Difference between estimates of 1 and 2 follows N0 1 Answer 4 Validity Since the    See Answer
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