# Question

A local city is considering building a new train to alleviate the heavy traffic on its highways.

To find out how many people would make use of this new train, a government worker went out and interviewed a random sample of commuters. The following are the number of miles driven each week by 10 people who said that they would use the train instead of driving to work:

150 750 300 425 175 600 450 250 900 275

Calculate the

(a) Range,

(b) Inter-quartile range, and

(c) Variance and standard deviation.

To find out how many people would make use of this new train, a government worker went out and interviewed a random sample of commuters. The following are the number of miles driven each week by 10 people who said that they would use the train instead of driving to work:

150 750 300 425 175 600 450 250 900 275

Calculate the

(a) Range,

(b) Inter-quartile range, and

(c) Variance and standard deviation.

## Answer to relevant Questions

A psychologist interested in nonverbal communication decided to do an informal study on eye contact. Knowing that eye contact tends to be associated with an emotional connection, she believed that most people would be ...1. The relative likelihood of occurrence of any given event is known as that event’s a. standard deviation. b. area under the normal curve. c. probability. d. All of the above 2. Probability varies from a. zero to ...Assume that scores among Asian Americans on an alienation scale are normally distributed with a mean μ = 22 and a standard deviation σ = 2.5 (higher scores reflect greater feelings of alienation). Based on this ...With the sample mean in Problem 11, find (a) The 95% confidence interval and (b) The 99% confidence interval. In Problem 11 A polling organization interviewed by phone 400 randomly selected fans about their opinion on random drug testing of professional baseball players and found that 68% favored such a regulation. a. Find the standard error of ...Post your question

0