Suppose the mean score on test is 80-with a standard deviation of 12 if each sco

Question

Suppose the mean score on test is 80-with a standard deviation of 12 if each score is increased by 5, what are the new mean and standard deviation? 80, 12 80, 17 85, 17 85, 17 85, 12 there's not enough information to tell If the standard deviation of a set of observations is 0, can conclude that there is no relationship between the observations that the average value is 0 that all observations are the same value that a mistake in the arithmetic has been made. None of the above. This year, a sample of 40 travel times to work for South Dakota residents gave a mean of 19.0 minutes and a standard deviation of 13.3 minutes. Determine the z- score for a resident whose travel time to work is 35.5 minutes

Explanation / Answer

(4) When each score is increased by 5, the mean increases by 5 but the standard deviation remains the same

Option (D)

(5) Here, each deviation is 0, so Option (C) All observations are the same value

(6) z = (x - )/ = (35.5 - 19)/13.3 = 1.2406

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.