On a coordinate plane, 2 triangles are shown. Triangle 1 has points at A (negative 3, 4), B (negative 2, 1), C (negative 4, 1).
2 answers:
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Answer:
(a) (0.9240, 0.956)
(b) (0.6383, 0.7017)
Step-by-step explanation:
The number of internet users involved in the survey, n = 846
The percentage of the respondents that said the internet has been good thing for them personally, = 94%
(a) The confidence interval of a percentage is given as follows;
The z-value for 95% confidence interval = 1.96
We get;
CI = 0.9240 ≤ ≤ 0.956 = (0.9240, 0.956)
(b) The percentage of the internet users that said the internet has directly strengthened their relationship with their families, = 67% = 0.67
The 95% confidence interval is therefore;
From which we have;
CI = 0.6383 ≤ ≤ 0.7017 = (0.6383, 0.7017)