# Normal Distribution

Feb 3rd, 2012
Studypool Tutor
Price: \$10 USD

Tutor description

5 Homework problems on Normal distribution, Head shot on 1. When Population Proportion is given 2. Binomial approximation to normal 3. Sample size is given 4. To find Less than, greater than, between

Word Count: 360
Showing Page: 1/2
Q1.The average thickness of books on a library shelf is 8.3 centimeters. The standard deviation is 0.6 centimeter. If 20% of the books are oversized, find the minimum thickness of the oversized books on the library shelf. Assume the variable is normally distributed. AnsValue of z to the cumulative probability above of 0.20 from normal table is 0.84P( x-u/ (s.d/sqrt(n) ) > x - 8.3/ (0.6/sqrt(1) ) = 0.8That is, ( x - 8.3/ (0.6/sqrt(1) ) = 0.84--> x = 0.84 * 0.6/sqrt(1) + 8.3 = 8.804Q2.The average repair cost of a microwave oven is \$55, with a standard deviation of \$8. The costs ar

## Review from student

Studypool Student
" Posted this and got four bids within 15 minutes. Clearly lots of tutors on the platform, quality was pretty legit too. "

1830 tutors are online

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors