8:07 pm← Section 4.5 Homework3 of 5<> 0/1X Incorrect.When a bus service reduces fares, aparticular trip from New York City toAlbany, New York, is very popular. A smallbus can carry four passengers. The timebetween calls for tickets is exponentiallydistributed with a mean of 40 minutes.Assume that each caller orders one ticket.What is the probability that the bus isfilled in less than 3 hours from the time ofthe fare reduction?Round your answer to 4 decimal places.i 0.0723Statistical Tables and ChartseTextbook and Media03-0988%

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A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Terri Vogel, an amateur motorcycle racer, averages 129.14 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.28 seconds . The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps. (Source: log book of Terri Vogel) Let X be the number of seconds for a randomly selected lap. Round all answers to 4 decimal places where possible.b. Find the proportion of her laps that are completed between 131.08 and 134.03 seconds. ___________________c. The fastest 2% of laps are under seconds.____________________d. The middle 70% of her laps are from ____ seconds to ____ seconds.
Terri Vogel, an amateur motorcycle racer, averages 129.41 seconds per 2.5-mile lap (in a 7 lap race) with a standard deviation of 2.25 seconds. The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps. (Source: logbook of Terri Vogel) Let X be the number of seconds for a randomly selected lap. Round all answers to 4 decimal places where possible. Find the proportion of her laps that are completed between 129.57 and 130.63 seconds. (______)The fastest 3% of laps are under(______) seconds. The middle 40% of her laps are from(_____) seconds to(_______) seconds.
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Previously, De Anza's 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. Find the probability that an individual had between $0.80 and $1.00. Graph the situation, and shade in the area to be determined.
Suppose a new drug is intended to improve walking distance in patients with Parkinson Disease A researcher measures patients walking distance in feet before and after trying the drug for 9 weeks. What is the value of t obs
Can you conclude that listening to music will decease the frequency of sleep attacks in narcoleptics at p=0.05?
Snapchat has more than 200 million daily users sending over 3 billion snaps a day. Suppose that: The time X between snaps you received is governed by: Exponential distribution, u = 8 minutes
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The amount of time an individual will live in their current residence before moving to a new one follows an Exponential distribution. Assume that the mean time between moves is five years. Estimate the decay rate: A = What proportion of individuals will move within the next year, rounded to four digits?
A hospital director is told that 57%57% of the treated patients are insured. The director wants to test the claim that the percentage of insured patients is under the expected percentage. A sample of 250250 patients found that 125125 were insured. Find the value of the test statistic. Round your answer to two decimal places.
Calculate the incidence rate of prostate cancer in this population A population of 200 healthy men was followed up for the development of prostate cancer. 10 men were followed-up for 1 year and were then lost to follow-up. After being followed-up for 5 years, 10 men developed prostate cancer. The remaining men who never developed prostate cancer were followed for 10 years.

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