8. The accompanying two-way frequency table appears in an article about marijuana use in college. Each of 440 college students was classified according to both frequency of marijuana use and parental use of alcohol and psychoactive drugs. Do the data suggest that parental usage and student usage are independent in the population from which the sample was drawn? Use a significance level of 0.01. Standard Level of Marijuana Usage Never Occasional Regular Never 142 55 40 Parental Use of Occasional 68 45 51 Alcohol and Drugs Regular 10 11 19

Q: -0.50 1.00 а) 0.60 -100 -0.50 b) 0.60 100 -1.00 -0.50 1.00 c) 0.60 -1.00 -0.50 1.00 d) 60 -1.00

A:

Q: Find 2x² +5x+1 -dr, x>0

A: Use the formulas below to evaluate the given integral.

Q: REWRITE

A: given that , increasing rate of area of a square be = 48  cm2/ secthen we have to find change rate…

Q: Solve the following quadratic equation for all values of x in simplest form. 6 – a? = -8

A:

Q: Solve for A.

A: This means that the product of matrix A with another matrix given an identity matrix. Therefore the…

Q: Solve for x. 2x - 2, x +5

A:

Q: answer question 2

A: As per the question we are given the following recurrence relation : T(n) = 6T(n/2) + n  ,  T(1) = 1…

Q: How to solve?

A:

Q: solve for b a=1\2bh

A: We will find the value of b in terms of a and h as following .

Q: Solve.  3x2+5x-2=0

A:

Q: Please solve all parts.

A:

Average

In mathematics, everyone must have heard the term average in one place or other. Almost all types of calculation require taking out an average. In everyday life, the term is used for denoting a certain amount that can be said to be a typical quantity for multiple people or objects. In other words, if a group of people possesses a certain object, then the average gives us an idea regarding the quantity of the object possessed by each person. However, this is solely based on mathematical calculation. It is important to note that most people will not strictly have the average value in a group.