There is a department that evaluates new smart phones reports the number of minor defects in each smart phone examined. Let X denote the number of minor defects in a randomly selected smart phone. The CDF of X is as follows: ´0 x<0 |.06 0 =x<1 .19 1sx< 2 |.39 2 5 x< 3 | .67 3sx< 4 .92 4sx< 5 .97 5sx< 6 1 65x Calculate following probabilities directly from the CDF: a. p(2), that is, P(X = 2) c. P(2 < X< 5) b. P(X> 3) d. P(2 < X< 5)

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A: Given information: n=100μ=6.0 One-sided p value of the test is 0.0068.

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Q: Suppose X has a normal distribtution N(2,1), then E(X)= Var(X)=

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Q: at  α =  5% LOS

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A: Solution:

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Q: A random sample of people were selected in order to compare the hight between vegetarians and…

A: It is an important part of statistics. It is widely used.

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.