A physical therapists believes that women are more flexible than men. She measures the flexibility of 31 randomly selected women and 45 randomly selected men by determining the number of inches subjects could reach while sitting on the floor with their legs straight out and back perpendicular to the ground. The more flexible an individual is the higher the measured flexibility will be. Men could reach an average of 18.64 inches with a standard deviation of 3.29 inches while women could reach an average of 20.99 inches with a standard deviation of 2.07 inches. 1. Compute the difference in averages, women - men, stating the value to 2 decimal places: 2. State the critical value for a 95% confidence interval: 3. State the standard error of the difference in averages, to 3 decimal places: 4. State the confidence interval, 2 decimal places for each value:
A physical therapists believes that women are more flexible than men. She measures the flexibility of 31 randomly selected women and 45 randomly selected men by determining the number of inches subjects could reach while sitting on the floor with their legs straight out and back perpendicular to the ground. The more flexible an individual is the higher the measured flexibility will be.
Men could reach an average of 18.64 inches with a standard deviation of 3.29 inches while women could reach an average of 20.99 inches with a standard deviation of 2.07 inches.
1. Compute the difference in averages, women - men, stating the value to 2 decimal places:
2. State the critical value for a 95% confidence interval:
3. State the standard error of the difference in averages, to 3 decimal places:
4. State the confidence interval, 2 decimal places for each value:
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