Problem #9: Glaucoma is a disease of the eye that is manifested by high intraocu

Question

Problem #9: Glaucoma is a disease of the eye that is manifested by high intraocular pressure. The distribution of 1ntraocular pressure in the general population is approximately normal with mean 16 mm Hg and standard deviation 3 mm and 16.8. Hg. In a random sample of 75 people, find the probability that the average intraocular pressure is between 15.4 Problem #9: answer correct to 4 decimals Just Save | | Submit Problem #9 for Grading Problem # Your Answer: Attempt #1 Attempt #2 Attempt #3 Your Mark:

Explanation / Answer

here std error =std deviation/(n)1/2 =3/(75)1/2 =0.3464

hence probability =P(15.4<Xbar<16.8)=P((15.4-16)/0.3464<Z<(16.8-16)/0.3464)

=P(-1.7321<Z<2.3094)=0.9895-0.0416 =0.9479

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---