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What is the probability of getting a 2 or a 5 when a dice is rolled?
A network provider investigates the load of its network. The number of concurrent users is recorded at Seventy - seven locations (thousands of people),
55.3 55.3 55.3 55.9 55.9 55.9 55.9 56.1 56.1 56.1 56.1 56.1 56.1 56.8
56.8 57.0 57.0 57.0 57.8 57.8 57.8 57.9 57.9 57.9 58.8 58.8 58.8 59.8
59.8 59.8 62.2 62.2 63.8 63.8 63.8 63.9 63.9 63.9 64.7 64.7 64.7 65.1
65.1 65.1 65.3 65.3 65.3 65.3 67.4 67.4 67.4 67.4 68.7 68.7 68.7 68.7
69.0 70.4 70.4 71.2 71.2 71.2 73.0 73.0 73.1 73.1 74.6 74.6 74.6 74.6
79.3 79.3 79.3 79.3 83.0 83.0 83.0
1) Construct a grouped frequency distribution for the data using five classes. Add the Relative frequency and the Percent frequency tables to the main frequency table.
Diameters of ball bearings are normally distributed with mean 0.498 cm and standard
deviation 0.002 cm. If specifications require 0.5 +- 0.004 cm, what percentage of
production will be rejected?
+- = plus - minus
X : -2 -1 0 1 2 3
P(X) : 0.1 a 0.2 2a 0.3 a
Find i) The value of ‘a’,
ii) its distribution function F(X),
iii) Mean and variance of X.
F(X) = 20e to the power -20x ; X>0
= 0 ; 0 otherwise
Find i) Mean of X, ii) P(X < 1000), iii) P(X>3000)
A.2 red beads are selected.
B.1 red and 1 white bead are selected.
C.At least 1 red bead.
a.Both marbles are red.
b.One of each color.
hours. Create 5 different random samples of 100 bulbs each which has a mean life of x_bar ~
1000 hours and perform one-way ANOVA with state it.
In this problem how the value is getting ∑X ij =499712
∑Xij^2 =499691630
please explain this to me sir
1. 406,25
2. 0,39
3. 20
4. 3,54
#339914 on Dec 2023