1:58 A multiple-choice test has four questions, each with five choices for the answer. Only one of the choices is correct. You randomly guess the answer to each question. Use the Binormial table to find the following: 1. What is the probability that you answer all the questions correctly? Answer is{ on 2. What is the probability that you answer only one question correct? Answer is 3. The mean of the distribution is : and its standard deviation is 0.80 0.64 ge Next page CS Scanned with CamScanner

An instructor selected a sample of the following quiz scores(out of possible 10 points) for 12 students in one of his classes: 9 10 2 6 7 7 4 3 3 8 5 7  The standard deviation for this set of scores is what?

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Refe of gir The The Table of numbers of girls and probabilities Number of Girls x 0 1 2 5678 A WN- 3 4 Print P(x) 0.006 0.035 0.116 0.216 0.263 0.223 0.103 0.035 0.003 Done hts. The ranc

* 00 Question 5 The table summarizes results from 982 pedestrian deaths that were caused by automobile accidents. Driver Pedestrian Intoxicated? Intoxicated? NO. 78 Yes Yes 53 216 635 If one of the pedestrian deaths is randomly selected, find the probability that the driver was not intoxicated but the pedestrian was. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. %3D = qod Submit Question MacBook Air 08 F3 Q F2 F4 F5 9 1 $ 4 2 % 9 R M A S H 9 × :

K The following data represent the number of drivers involved in a fatal crash in 2016 in various light and weather conditions. Complete parts (a) through (c) below. Click the icon to view the data for fatal crashes in 2016. (a) Among fatal crashes in unknown weather conditions, what is the probability that a randomly selected fatal crash occurs when it is dawn/dusk? The probability that a randomly selected fatal crash in unknown weather conditions occurs when it is dawn/dusk is approximately. (Round to three decimal places as needed.) Data table Weather Daylight Dark, but Lighted 5875 497 51 54 255 Normal Rain Snow/Sleet Other Unknown 14,307 875 219 125 810 (...) Dark 8151 681 156 220 548 Dawn/Dusk Other 1183 87 40 71 65 8 2 9 133 X