If a true-false test with 15 questions is given, what is the probability of scoring(A) Exactly 80% just by guessing?(B) 80% or better by just guessing? Fuel economy estimates for automobiles built one year predicted a mean of 27.8 mpg and a standard deviation of 6.2 mpg for highway driving. Assume that a Normalmodel can be applied. Use the 68 – 95 - 99.7 Rule to complete parts a) through e).A.В.68%,68%68%95%95%95%99.7%99.7%99.7%18.5 21.6 24.7 27.8 30.9 34 37.19.2 15.4 21.6 27.8 40.2 52.6 659.2 15.4 21.6 27.8 34 40.2 46.4b) In what interval would you expect the central 99.7% of autos to be found?Using the 68-95-99.7 rule, the central 99.7% of autos can be expected to be found in the interval from 9.2 to 46.4 mpg.(Do not round. Type integers or decimals.)c) About what percent of autos should get more than 34 mpg?Using the 68-95-99.7 rule, about % of autos should get more than 34 mpg.(Do not round. Type an integer or a decimal.)

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Description: If a true-false test with 15 questions is given, what is the probability of scoring(A) Exactly 80% just by guessing?(B) 80% or better by just guessing? Fuel economy estimates for automobiles built one year predicted a mean of 27.8 mpg and a standard

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Answered: If a true-false test with 15 questions…

Math

Probability

If a true-false test with 15 questions is given, what is the probability of scoring (A) Exactly 80% just by guessing? (B) 80% or better by just guessing?

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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If a true-false test with 15 questions is given, what is the probability of scoring (A) Exactly 80% just by guessing? B) 80% or better by just guessing