Based on a? poll, among adults who regret getting? tattoos, 26?% say that they w

Question

Based on a? poll, among adults who regret getting? tattoos, 26?% say that they were too young when they got their tattoos. Assume that nine adults who regret getting tattoos are randomly? selected, and find the indicated probability. Complete parts? (a) through? (d) below. a. Find the probability that none of the selected adults say that they were too young to get tattoos. nothing ?(Round to four decimal places as? needed.) b. Find the probability that exactly one of the selected adults says that he or she was too young to get tattoos. nothing ?(Round to four decimal places as? needed.) c. Find the probability that the number of selected adults saying they were too young is 0 or 1. nothing ?(Round to four decimal places as? needed.) d. If we randomly select nine ?adults, is 1 a significantly low number who say that they were too young to get? tattoos? ? Yes, No, because the probability that ? less than 1 more than 1 at most 1 at least 1 exactly 1 of the selected adults say that they were too young is ? less than greater than equal to 0.05.

Explanation / Answer

Ans:

Given that

n=9,p=0.26

a)

P(none)=P(x=0)=(1-0.26)9=0.0665

b)

P(exactly one)=P(x=1)=9C1*0.261*(1-0.26)8=0.2104

c)P(x=0 or x=1)=P(x=0)+P(x=1)

=0.0665+0.2104=0.2770

d)No, because the probability that at most 1 of the selected adults say that they were too young is greater than 0.05.

Related Questions

Navigate

• Browse (All)
• Browse B
• Subjects

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