Introductory Statistics
3rd Edition
ISBN: 9780135188927
Author: Gould, Robert, Ryan, Colleen N. (colleen Nooter)
Publisher: Pearson,
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Chapter 6, Problem 100CRE
Quantitative SAT Scores, Normal and Binomial
The distribution of the math portion of SAT scores has a
a. What is the
b. What is the probability that four randomly selected people will all have SAT scores of 550 or more?
c. For 800 randomly selected people, what is the probability that 250 or more will have scores of 550 or more?
d. For 800 randomly selected people, on average how many should have scores of 550 or more? Round to the nearest whole number.
e. Find the standard deviation for part d. Round to the nearest whole number.
f. Report the
g. If 400 out of 800 randomly selected people had scores of 550 or more, would you be surprised? Explain.
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Chapter 6 Solutions
Introductory Statistics
Ch. 6 - Directions Determine whether each of the following...Ch. 6 - 6.1-6.4 Directions Determine whether each of the...Ch. 6 - 6.1-6.4 Directions Determine whether each of the...Ch. 6 - 6.1-6.4 Directions Determine whether each of the...Ch. 6 - Loaded Die (Example 2) A magician has shaved an...Ch. 6 - Prob. 6SECh. 6 - Distribution of Two Thumbtacks When a certain type...Ch. 6 - Two Children Make a list of all possible outcomes...Ch. 6 - Two Thumbtacks a. From your answers in Exercise...Ch. 6 - Two Children Using your list of outcomes in...
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