Foundations Of Mathematics 11 WNCP Student Book – Cathy Canavan – McGrath

b) The manufacturer wants to offer the option of purchasing an extended warranty. If the manufacturer wants to repair, at most, 20% of the players under the extended warranty, what length of extended warranty should be offered? Key Ideas e The standard normal distribution is a 99.7% normal distribution with mean, , Se Sassacesauahonsdde src Enoan aie ierhapasecatanhaenatniashenshhuacnnnadsannnasiacensa asses anae ska ene >, of 0 and a standard deviation, o, ye dnt Leg eo O As, dere come S of 1. The area under the curve of a 68% normal distribution Is 1.

e Z-scores can be used to compare data from different normally distributed sets by converting their distributions to the standard normal distribution. oY pes peeepp), ee \—— one standard deviation Need to Know e A z-score indicates the number of standard deviations that a data value lies from the mean. It is calculated using this formula: Real a o ° A positive z-score indicates that the data value lies above the mean.

A negative z-score indicates that the data value lies below the mean. e The area under the standard normal curve, to the left of a particular z-score, an be found in a z-score table or determined using a graphing calculator. en 5.5 Z-Scores CHECK Your Understanding it Determine the z-score for each value of x. a) p= 112,0 = 15.5,x = 174 c) p= 82,0 = 12.5,x = 58 b) wp = 53.46, o = 8.24, x = 47.28 d) p=245,0= 22.4, x = 300 .

Using a z-score table (such as the table on pages 592 to 593), determine the percent of the data to the left of each z-score. a) z= 1.24 b) z= —2.35 c) z= 2.17 d) z = —0.64 . Determine the percent of the data between each pair of z-scores. a) z= —2.88 and z= —1.47 b) z = —0.85 and z = 1.64 4. What z-score is required for each situation? a) 10% of the data is to the left of the z-score.

b) 10% of the data is to the right of the z-score. c) 60% of the data is below the z-score. d) 60% of the data is above the z-score. In the following questions, assume that the data approximates a normal distribution. 5. Standard 10. Test Results Meg’s (%) subject] uw [a | ( fengish | 77 | 2 | 93 | 11.

Calculate the z-score for each value of x. a) wp = 24,0 = 2.8, x = 29.3 c) w = 784, 0 = 65.3, x = 817 b) p = 165, 6 = 48, x = 36 d) p =2.9,0 =0.3,x = 3.4 .

With the Nelson Foundations of Mathematics 11 Student Book, you also receive access to the accompanying Nelson Foundations of Mathematics 11 Online Student eBook. Please follow the steps below to register for the Nelson Foundations of Mathematics 11 Online Student eBook. . Navigate to http://www.nelson.com/esource . Search for “Foundations of Mathematics 11” or the ISBN of the Student Book: 017650270X. Select “Foundations of Mathematics 11 Online Student eBook” from the search results at the bottom of the page. . Enter your PRT code and email address. Your PRT code is: FM11SXRFHE.

Please note that this code is case sensitive. Click “Submit.” You will receive an email confirming your PRT validation and providing you with a weblink and access code. This email may take from a few minutes to a few hours to arrive. . Follow the instructions provided in the email to create a username and password. You can reuse an existing username and password. . With your username and password, you can now access your Online Student eBook at the following website: http://www.nelson.com/wncpmath/ foundations/student NELSON EDUCATION Sa 208 A : ¥ : 7 .

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i iD ; i sat j Pe ; ‘ “J es i Ss ef -» uy! A Lhe n c this ; ao . 2 ie a D Authors and Consultants Cathy Canavan-McGrath, Hay River, Northwest Territories Serge Desrochers, Calgary, Alberta Hugh MacDonald, Edmonton, Alberta Carolyn Martin, Edmonton, Alberta Michael Pruner, Vancouver, British Columbia Hank Reinbold, St. Albert, Alberta Rupi Samra-Gynane, Vancouver, British Columbia Carol Shaw, Winnipeg, Manitoba Roger Teshima, Calgary, Alberta Darin Trufyn, Edmonton, Alberta First Nations, Métis, and Inuit Cultural Reviewers Joanna Landry, Regina, Saskatchewan Darlene Olson-St.

This is a short excerpt from the opening of “” by Unknown, quoted for review and introduction purposes. All rights belong to the copyright holders.

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• ISBN: 9780176502706, 017650270X
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