The time X (minutes) for a lab assistant to prepare the equipment for a certain experiment is believed to have a uniform distribution on [15, 36]. What is the probability thatpreparation time exceeds 27 minutes?O 3/7O 2/7O 4/7O 13/21O something else

The variable X time for a lab assistant to prepare the equipment for a certain experiment is…

Answered: The time X (minutes) for a lab…

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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The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is normally distributed with μ equals=1256 and σ equals=130 chips. What is the probability that a randomly selected bag contains between 866 and 1646 chocolate chips?
(b) What is the probability that a randomly selected car will spend more than 191 seconds in the restaurant's drive-through? The probability that a randomly selected car will spend more than 191 seconds in the restaurant's drive-through is______ (Round to four decimal places as needed.)
According to recent reports, currently 39% of the population of NC (adults and children) has been fully vaccinated against Covid. Suppose of random sample of 400 individuals from the population of NC is selected. Let x represent the number in the sample who are fully vaccinated. d. Find the probability that 130 or fewer in the sample have been fully vaccinated. Round to 4 decimal places. Would this result be unusual? Explain.
You and your friends have a large messaging group on GroupMe. The number of messages that are received in the group follows a Poisson distribution with an average of 30 per hour – call this random variable X. Let T be an exponentially distributed random variable that represents the time between messages received. 1. What is the probability that there are between 26 and 35 messages in the next hour? 2. What is the probability that there are exactly 30 messages in the next two hours? 3. What is the average for the variable, T?
0.5 k 0.4 0.3 0.2 0.1 n = 25 p=0.5 5 10 15 20 P(13 ≤ X ≤ 15) = 0.39 The GeoGebra Applet above allows you to explore a binomial distribution up to n = 25. Suppose Bob wins 25% of his professional chess matches. He going to play 23 of chess games next week. Determine the following. 25 i) The probability that Bob wins between 2 and 7 games is (to two decimal places) 0.00 Note: here between means includuing 2 and 7. ii) The probability that Bob wins 9 or more games is (to two decimal places) 0.00 iii) The probability that Bob wins 2 or less games is 0.00
The data records the smiling times, in seconds, of an eight-week-old baby.We will assume that the smiling times, in seconds, follow a uniform distribution between zero and 23 seconds, inclusive. This means that any smiling time from zero to and including 23 seconds is equally likely.What is the probability that a randomly chosen eight- week-old baby smiles between two and 18 seconds? O 0.1304 O 0.8696 O 0.6957 0.7826
The ave number annual misprinis per page compants is selected at random: page reports is Ciht. If s O.4. in a ( o find the probability that it will contain more than thoo misprints

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The time X (minutes) for a lab assistant to prepare the equipment for a certain experiment is believed to have a uniform distribution on [15, 36]. What is the probability that preparation time exceeds 27 minutes? O 3/7 O 2/7 O 4/7 O 13/21 O something else