Take a Test - Cynthia Benjamin- Google Chrome aSecure https://www.mathxl.com/Stu

Question

Take a Test - Cynthia Benjamin- Google Chrome aSecure https://www.mathxl.com/Student/PlayerTest.aspx?testld-1748504908icenterwin-yes MA-180-ZN, MA-418-ZN, Statistics (3) Cynthia Benjamin & 1 2/20/18 6:47 PM Quiz: Quiz # 5, Chapter 5 Time Remaining: 00:29 25 Submit Qu This Question: 1 pt 1 of 5 (0 complete) This Quiz: 5 pts possib Question Help Ted is not particularly creative. He uses the pickup line "If I could rearrange the alphabet, I'd put U and I together" The random variable x is the ber of girls Ted approaches before encountering one who reacts postively. Determine whether the table describes a probabilily distribution I does, find its mean and standard deviation 002 Find the mean of the random variable x. Select the correct choice below and if necessary, fil in the answer box to complete your choice. Round to one decimal place as needed.) O B. The table is not a probability distribution Find the standard deviation of the random variable x Select the correct choice below and, if necessary fil in the answer box to complete your choice. Round to one decimal place as needed) O B. The table is not a probability distribution Click to select and enter your answers)

Explanation / Answer

Given data

Conditions for PMF

This condition is satisified

Since sum of probabilities=0.906 which is not equals to 1.

a) Hence the table is not probability distribution

b) the table is not probability distribution

x P(X) 0 0.002 1 0.036 2 0.102 3 0.258 4 0.504

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

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