Answer
See below
Work Step by Step
The probability of tossing a coin 30 times and getting 7 heads can be found by applying: $P(X=7)=_nC_k p^k (1-p)^{n-k}\\=_{30} C_{7} 0.5^{7}(1-0.5)^{30-7}\\=\frac{30!}{(30-7)!.7!}\times0.5 ^{30}\\=0.001896$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 11 Data Analysis and Statistics - 11.2 Apply Transformations to Data - 11.2 Exercises - Mixed Review - Page 755: 33
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