Question1.

The focus this week is on confidence intervals.Utilize the following information and answer the questions below: A 95%confidence interval obtained from a sample of 100outpatients for the true population mean normal mean systolic blood pressure is given by (114mmHG, 120mmHG).

Provide a correct interpretation of this interval. Can you think of other interpretations that would also be correct?

This confidence interval came from a single sample, would we getthe same interval if we obtained a different set of 100 patients? What does this imply about your interpretation of the given interval?

If we wanted a 99% confidence interval instead, can you tell whether it would be narrower or wider? Can you tell by how much?

Q2.

If we have 95% confidence interval for the mean birth weight of infants born to mothers who smoke (6.3 lbs, 7.2 lbs), that means that the probability that the true mean birth weight for all infants born to mothers who smoke is between 6.3 pounds and 7.2 pounds.

A-TRUE

B-FALSE

Q3.

It's impossible for the IQR to be negative.

A-TRUE

B-FALSE

Q4.

It's impossible for the IQR to be negative.

A-TRUE

B-FALSE

Q5.We randomize in an experiment in order to ensure that our sample is representative of our population.ANSWERS= A-TRUE.B-FALSE