Estimate the probability that the store will gross over $850 at least 6 out of 10 business days. at most 3 of the 10 business days. fewer than 7 out of 20 business days.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.8: Probabilities Of Disjoint And Overlapping Events
Problem 2C
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Trevor is interested in purchasing the local hardware/electronic goods store in a small town in South Ohio. After examining accounting records for the past several years, he found that the store has been grossing over $850 per day about 60% of the business days it is open.

Estimate the probability that the store will gross over $850

at least 6 out of 10 business days.

at most 3 of the 10 business days.

fewer than 7 out of 20 business days.

more than 16 out of 20 business days.

What is the expected (mean) number of business days for which the store would gross over $850 in a month (30 days)?

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