a. Determine Isabelle's z-score (to the nearest hundredth) for her English test if she scored an 85 on the test. z =------------------------------ Work: b. Determine Isabelle's z-score (to the nearest hundredth) for her biology test if she scored a 78 on that test. z =--------------------------------------- Work: c. Compared to her peers, on which test did I

a. Determine Isabelle's z-score (to the nearest hundredth) for her English test if she scored an 85 on the test. z =------------------------------ Work: b. Determine Isabelle's z-score (to the nearest hundredth) for her biology test if she scored a 78 on that test. z =--------------------------------------- Work: c. Compared to her peers, on which test did I

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 26PFA

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Question

Isabelle recently took a test in both her English and her biology classes. The test in her English class had a mean of μ = 82 and a standard deviation of σ = 5.5, while the test in her biology class had a mean of 64 and a standard deviation of 18.

a. Determine Isabelle's z-score (to the nearest hundredth) for her English test if she scored an 85 on the test.
z =------------------------------ Work:

b. Determine Isabelle's z-score (to the nearest hundredth) for her biology test if she scored a 78 on that test.
z =--------------------------------------- Work:

c. Compared to her peers, on which test did Isabelle perform better? Enter your answer as English or Biology or Neither .

Answer:
Explain your answer to C using your answers to a. and b.

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