Mathematics, 17.09.2019 07:00, smckinney6139
Students in a class take a quiz with eight questions. the number x of questions answered correctly can be approximated by the following probability distribution. complete parts (a) through (e).
x p(x)
1 0.020.02
2 0.040.04
3 0.060.06
4 0.080.08
5 0.130.13
6 0.250.25
7 0.190.19
8 0.150.15
9 0.08
(a) use the probability distribution to find the mean of the probability distribution. muμequals=55(round to the nearest tenth as needed.)
(b) use the probability distribution to find the variance of the probability distribution. sigma squaredσ2equals=3.63.6(round to the nearest tenth as needed.)
(c) use the probability distribution to find the standard deviation of the probability distribution.1.91.9(round to the nearest tenth as needed.)
(d) use the probability distribution to find the expected value of the probability distribution. 55(round to the nearest tenth as needed.)
Answers: 1
Mathematics, 22.06.2019 01:00, s27511583
The weight of 46 new patients of a clinic from the year 2018 are recorded and listed below. construct a frequency distribution, using 7 classes. then, draw a histogram, a frequency polygon, and an ogive for the data, using the relative information from the frequency table for each of the graphs. describe the shape of the histogram. data set: 130 192 145 97 100 122 210 132 107 95 210 128 193 208 118 196 130 178 187 240 90 126 98 194 115 212 110 225 187 133 220 218 110 104 201 120 183 124 261 270 108 160 203 210 191 180 1) complete the frequency distribution table below (add as many rows as needed): - class limits - class boundaries - midpoint - frequency - cumulative frequency 2) histogram 3) frequency polygon 4) ogive
Answers: 1
Students in a class take a quiz with eight questions. the number x of questions answered correctly c...
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