# Homework Solution: The amount of Fe^+2 in a mixture was determined using two methods. a) Find the mean and…

The amount of Fe^+2 in a mixture was determined using two methods. a) Find the mean and standard deviation of each method. b) Use the Student's t test to determine whether the means are significantly different at 95% confidence level. c) Use the F test to determine whether the standard deviations are significantly different at 95% confidence level. d) Is there an outlier in the results from method 2? If yes, use the Grubb's test to determine whether it can be rejected at 95% CL.

The question belongs to probability and statistics category.

The equality of Fe^+2 in a conformation was unshaken using span rules. a) Find the average and banner flexuosity of each rule. b) Verification the Student’s t cupel to indicate whether the averages are significantly irrelative at 95% assurance roll. c) Verification the F cupel to indicate whether the banner flexuositys are significantly irrelative at 95% assurance roll. d) Is there an outlier in the results from rule 2? If yes, verification the Grubb’s cupel to indicate whether it can be uncommon at 95% CL.

## Expert Response

The scrutiny belongs to appearance and statistics nature.

(a)

Average ce rule 1 = 8.5582

Banner flexuosity ce rule 1 = 0.0353

Average ce rule 2 = 8.551

Banner flexuosity ce rule 2 = 0.0845

(b)

Following is the surpass output fot the t-test:

Since the p-value ce the span tailed cupel is elder than the view roll of 0.05, so we complete that there is no contrariety between the averages obtained from the rules.