Mathematics, 28.02.2020 19:58 anna8352
You are to take a multiple-choice exam consisting of 100 questions with 5 possible responses to each question. Suppose that you have not studied and so must guess (select one of the five answers in a completely random fashion) on each question. Let x represent the number of correct responses on the test.
a) what kind of probability does x have?
b) What is your expected score on the exam?
c) Compare the variance and standard deviation of x.
d) based on your answers to parts b and c, is it likely that you would score over 50 on this exam? explain your reasoning behind your answer
Answers: 1
Another question on Mathematics
Mathematics, 21.06.2019 23:30
If a runner who runs at a constant speed of p miles per hour runs a mile in exactly p minutes what is the integer closest to the value p
Answers: 2
Mathematics, 21.06.2019 23:40
Which set of side lengths form a right side? a) 3ft,6ft,5ft b)50 in,48in,14in c)53m,48m,24m d)8cm,17cm,14cm
Answers: 2
Mathematics, 22.06.2019 00:30
Which equation could represent the relationship shown in the scatter plot? y=−3x−2 y=−3/4x+10 y=−2/3x+1 y=9x−12 scatter plot with x axis labeled variable x and y axis labeled variable y. points go from upper left to lower right.
Answers: 1
Mathematics, 22.06.2019 01:30
Study results indicate that the mean length of time people spend on a bus in a city is between 21.2 min and 24.5 min what is the study margin of the error?
Answers: 1
You know the right answer?
You are to take a multiple-choice exam consisting of 100 questions with 5 possible responses to each...
Questions
Mathematics, 13.03.2020 02:00
Mathematics, 13.03.2020 02:00
Mathematics, 13.03.2020 02:00
Mathematics, 13.03.2020 02:00
Mathematics, 13.03.2020 02:00
Chemistry, 13.03.2020 02:00
