True or False. Please also justify your answers with a short description of why

Question

True or False. Please also justify your answers with a short description of why you chose true or false. a) If a distribution is skewed right then its histogram will exhibit a mode at the lower end of the data and the rest of the bars will be to the right and will get smaller as the data values become higher b) If A and B are mutually exclusive events with positive probabilities of occurring, then they are not independent events c) If the mean of a random variable is 30 and the standard deviation is 6, and three consecutive data points are 15, 34, and 17, then the control chart will indicate an out of control signal d) If a student scores a 75% on an exam, then that student is in the 75th percentile e) If one million 95% confidence intervals for the mean were computed, then approximately 95 of these confidence intervals would contain the population mean

Explanation / Answer

a)

In a right skewed histogram, the graph has aright tailed. Higher number of data values are at left end and right tail has lower number of values.

Answer : true

b)

Mutuallu exclusive events means, if event A occur then event B cannot occur. While independent events means occurence of one does not effect the occurence of other.

Answer: true

c)

Since all three points are within three standard deviation of mean so no point is out of control.

Answer : false

d)

Answer: false

e)

Answer : true

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

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