You read a research report of the differences in weight gain in infants on enriched formula (sample 1) and soy-based formula (sample 2). The findings are reported as: t=6.79; p=.006; Confidence interval of the mean difference: 4.76 to 8.43.
What is the hypothesis decision?
Reject the null hypothesis
Accept the null hypothesis
Sample 2 is larger than sample 1: the soy-based formula showed greater weight gain in infants than the enriched formula
Sample 1 is larger than sample 2: the enriched formula showed greater weight gain in infants than the soy-based formula
You read a research report of the differences in weight gain in infants on enriched formula (sample 1) and soy-based formula (sample 2). The findings are reported as: t=6.79; p=.006; Confidence interval of the mean difference: 4.76 to 8.43.
What is the conclusion statement?
Accept the null hypothesis
Sample 2 is larger than sample 1: the soy-based formula showed greater weight gain in infants than the enriched formula
Reject the null hypothesis
Sample 1 is larger than sample 2: the enriched formula showed greater weight gain in infants than the soy-based formula
You read a research report in which the confidence interval of the mean difference is reported as -1.45 to 3.46. You know from this information that:
There is no statistically significant differences between samples
There is a statistically significant difference between samples; the mean of sample 1 is larger than the mean of sample 2
There is a statistically significant difference between samples; the mean of sample 1 is smaller than the mean of sample 2
You read a research report of the differences in weight gain in infants on enriched formula (sample 1) and soy-based formula (sample 2). The findings are reported as: t=6.79; p=.006; Confidence interval of the mean difference: 4.76 to 8.43.
What is the hypothesis decision?
Reject the null hypothesis
Accept the null hypothesis
Sample 2 is larger than sample 1: the soy-based formula showed greater weight gain in infants than the enriched formula
Sample 1 is larger than sample 2: the enriched formula showed greater weight gain in infants than the soy-based formula
You read a research report of the differences in weight gain in infants on enriched formula (sample 1) and soy-based formula (sample 2). The findings are reported as: t=6.79; p=.006; Confidence interval of the mean difference: 4.76 to 8.43.
What is the conclusion statement?
Accept the null hypothesis
Sample 2 is larger than sample 1: the soy-based formula showed greater weight gain in infants than the enriched formula
Reject the null hypothesis
Sample 1 is larger than sample 2: the enriched formula showed greater weight gain in infants than the soy-based formula
You read a research report in which the confidence interval of the mean difference is reported as -1.45 to 3.46. You know from this information that:
There is no statistically significant differences between samples
There is a statistically significant difference between samples; the mean of sample 1 is larger than the mean of sample 2
There is a statistically significant difference between samples; the mean of sample 1 is smaller than the mean of sample 2
Related textbook solutions
Related questions
Choose the best answer.
Suppose you collect a sample that has a mean of 37 with a 99% confidence interval of [32,42], and you are interested in the hypothesis test below at the α=0.05 level.
| H0: μ=43 |
| Ha: μ≠43 |
a) You should ask for more information because the sample size and standard deviation are needed for a hypothesis test of this kind.
b) You should fail to reject the null hypothesis because the p-value is greater than 0.05.
c) You should ask for more information because the confidence interval does not match the αα level.
d) You should reject the null hypothesis because the p-value is less than 0.05.
