The Central Limit Theorem for Sample Means (Averages) · Exercise 7
Previously, De Anza statistics students estimated that the amount of change daytime statistics students carry is exponentially distributed with a mean of $0.88. Suppose that we randomly pick 25 daytime statistics students.
(a) In words, Χ = ____________
(b) Χ ~ _____(_____,_____)
(c) In words, = ____________
(d) ~ ______ (______, ______)
(e) Find the probability that an individual had between $0.80 and $1.00. Graph the situation, and shade in the area to be determined.
(f) Find the probability that the average of the 25 students was between $0.80 and $1.00. Graph the situation, and shade in the area to be determined.
(g) Explain why there is a difference in part e and part f.
OpenStax, Introductory Statistics 2e · §7.1 The Central Limit Theorem for Sample Means (Averages) · Exercise 7
No hints for this one.
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