Children\'s cereal: 42.8, 59.4, 46.9, 40.3, 54.8, 48.2, 54.6, 44.4, 42.2, 41.3,
ID: 3437263 • Letter: C
Question
Children's cereal: 42.8, 59.4, 46.9, 40.3, 54.8, 48.2, 54.6, 44.4, 42.2, 41.3, 47.2, 42.8, 36.3, 59.6, 47.7, 50.3, 36.4, 55.4, 41.1, 34.3
Adult's cereal: 24, 29, 1.7, 6.1, 1.9, 22, 19.7, 12.2, 21, 7.5, 8.8, 14.1, 18, 11.8, 2.8, 19.7, 1.4, 2.7, 2, 5.6, 14.8, 0.3, 2.7, 3.4, 7.5, 2.1, 15.1, 5.8, 15.1, 10.5
The confidence interval is ( , )
Interpret the confidence interval. Select the correct choice below and fill in the answer boxes to complete your choice.
a. Based on these samples, with 95% confidence, children's cereals average between the lower boundary of __ and upper boundary of __ more grams of sugar content than adult's cereals.
b. Based on these samples, with 95% confidence, adult's cereals average between the lower boundary of __ and upper boundary of __ more grams of sugar content than children's cereals.
Explanation / Answer
Confidence interval:
The mean of Group One minus Group Two equals 35.990
95% confidence interval of this difference: From 31.448 to 40.532
P value and statistical significance:
The two-tailed P value is less than 0.0001
By conventional criteria, this difference is considered to be extremely statistically significant.
a. Based on these samples, with 95% confidence, children's cereals average between the lower boundary of __ and upper boundary of __ more grams of sugar content than adult's cereals.
Group Group One Group Two Mean 46.300 10.310 SD 7.505 8.027 SEM 1.678 1.466 N 20 30Related Questions
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