STA 2023

Homework 6

Due February 18, 2010

　

Use the Standard Normal Table to determine the following probabilities. Show any necessary work please.

  1. P(z < 1.52) _______________

  2. P(z > 0.63) _______________

  3. P(-1.23 < z < 1.06) _______________

    The mean amount of sleep American adults get during the week is 6.3 hours with a standard deviation of 0.9 hours. Use this information and the Empirical Rule to answer the following questions. Show your work where necessary.

  4. 95% of American adults get between ___________ and _____________ hours of sleep.

    　

  5. What percent of American adults sleep between 5.4 hours and 7.2 hours? _________

    　

  6. What percent of American adults sleep more than 8.1 hours? ___________

    　

    Scores on a math scholarship exam are normally distributed with mean 24.5 and standard deviation 3.8. Use this information and z-scores to answer the following questions. Please show your work.

  7. If an exam taker is chosen at random, what is the probability of a score below 20?

  8. If an exam taker is chosen at random, what is the probability of a score higher than 30?

  9. If an exam taker is chosen at random, what is the probability of a score between 20 and 30?

  10. What exam score is the 95th percentile?

Welcome to

 Martha Goshaw's Home Page

Office:  V-007G

My office is on the lower level of the V Building.  The outer door to the building says V-007.  Go down the hall, turn left and I'm the first office on the right.

Phone:  407-708-2243          goshawm@seminolestate.edu

February 18, 2010:  ANGEL IS DOWN!  Angel has been down since 10:40 am this morning and I am not sure how long it will continue to be down.  You may submit HW 6 to me via the College email address above. 

Office Hours Spring 2010      

Campus office hours for spring 2010 are Tuesday and Thursday from 8 - 10:30 am and 1 - 3 pm in V007G.  

Virtual office hours will be posted on individual course pages at the beginning of class in August.

                  

Class Schedule for Spring 2010

STA 2023      Online  Sections 

                                   

MAC 2233     Online Section 

STA 2023H    TTh 11 - 12:15 in S219

 

              

 Please select the course below for which you need more information.  Course pages for all classes are now housed on ANGEL.  

STA 2023    Statistical Methods (Campus) MAC 2233   Concepts of Calculus (Campus)
STA 2023    Statistical Methods (Online) MAC 2233    Concepts of Calculus (Online)
STA 2023H   Statistical Methods Honors MAC 2233  Concepts of Calculus (Hybrid)
STA 2023 Statistical Methods Hybrid  

My Bio

AMATYC 2009 Presentation (Hybrid Courses)

 

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"Football is like calculus.  Someone has to show you how to do it,  but once you've got 'er figgered out, why, she's easy!"

Bert Jones, former Baltimore Colts quarterback  (He majored in mathematics in college.)