Answered: P(x) 0.05 0.1 2 0.3 3 0.55 Find the…

P(x) 0.05 0.1 2 0.3 3 0.55 Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal places

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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How do I find the standard deviation?
A reference states that average daily high temperature in June in a particular city is 86°F with a standard deviation of 7, and it can be assumed that they to follow a normal distribution. We use the following equation to convert "F (Fahrenheit) to "C(Celsius) C-(F-32)=² (a) Write the probability model for the distribution of temperature in C in June in this city. (Round your standard deviation to four decimal places) ~~-[ (b) What is the probability of observing a 31°C (which roughly corresponds to 87.) temperature or higher a a randemily selected day in June in this city? Calculate using the "C model from part (a). (Round your answer to four decimal places.) (c) The probability of observing a 67.8°F temperature or higher on a randomly selected day in June this city is approximately 0.3983, Did you get the same answer or a different answer in part (b)? Are you surprised? Explain. Both sets of calculations produced approximately the same answer which isn't surprising since once we…
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Intelligence Quotient (IQ) scores are often reported to be normally distributed with μ=100.0 and σ=15.0 . A random sample of 55 people is taken. Step 2 of 2 : What is the probability that the mean IQ score of people in the sample is less than 96 ? Round your answer to 4 decimal places, if necessary.
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Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal places
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correct answer please . I