The samples that are appropriate to survey regarding how the city’s residents feel about building a new youth center are:
100 residents who live near the proposed site for the youth center.50 children at each of the city’s four elementary schools.100 parents of children at each of the city’s four elementary schools.What is sample?Sample can be defined as the way of randomly collecting data or information from a group of population so as to draw or reach a conclusion.
Most researcher tend to collect sample when carrying out a survey in which they will then examine, analyze and evaluate the sample they collected before reaching a conclusion.
When a researcher want to carryout survey so as to know how the resident of a city feel about building a new youth center. The researcher has to collect the survey sample from :
100 residents who live near the proposed site for the youth center.50 children at each of the city’s four elementary schools.100 parents of children at each of the city’s four elementary schools.Therefore the correct option is B,D,E.
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The complete question is:
Which are samples that are appropriate to survey regarding how the city’s residents feel about building a new youth center? Select all that apply.
10 names selected from the city phone book.
100 residents who live near the proposed site for the youth center.
100 tourists at the city park last Friday.
50 children at each of the city’s four elementary schools.
100 parents of children at each of the city’s four elementary schools.
Exhibit 17-5 State Division of Motor Vehicles (DMV) statistics show the rate of new driver's license applications to be as shown below. Month April Week1 1 Application 238 199 Nm 215 212 207 211 May nm 196 206 Refer to Exhibit 17-5. Using a five-week moving average, what is the forecast for the first week in April? a. 198.45 Ob. 202.83 C. 206.40 d. 200.20
Previous question
The forecast for the first week of June is 206.40.
The forecast for for the first week of June will be based on the five-week moving average.
Five-week moving average: (applications of (week 1 + week 2 + week 3 + week 4 +week 5)) / 5
For first 5 week: (238 + 199 +215 +212 +207)/5 = 214.20
For second 5 week: (199 + 215+ 212+ 207+ 211)/5 = 208.80
For third 5 week : (215 + 212 + 207 + 211 + 196)/5 = 208.20
For the fourth 5 week or the first week of June:
(212 + 207 + 211+ 196 + 206)/5 = 206.40
The question is incomplete, the complete question is:
Exhibit 17-5 State Division of Motor Vehicles (DMV) statistics show the rate of new driver's license applications to be as shown below.
Month Week Application
April
1 238
2 199
3 215
4 212
May 1 207
2 211
3 196
4 206
Refer to Exhibit 17-5. Using a five-week moving average, what is the forecast for the first week in June?
a. 198.45
b. 202.83
C. 206.40
d. 200.20
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Solve the system using the substitution method. If the system does not have one unique solution, also state the number of solutions and whether the system is
inconsistent or the equations are dependent. Express numbers as integers or simplified fractions.
10x-y-1
5x-4y=-3
The system has one solution.
The solution set is
{0}.
O The system has no solution ().
The system is inconsistent.
The equations are dependent.
O The system has infinitely many solutions.
The solution set is
The system is inconsistent.
The equations are dependent.
X
0-0
The system has one solution. Option A
How to solve the system of equationsThe substitution method of solving simultaneous equations involving substituting the value of one variable I to a given equation.
Given the equation;
10x - y = 1 (1)
5x -4y = -3 (2)
Make 'y' the subject from equation (1)
-y = 1 - 10x
y = -1 + 10x
Substitute the value into equation(2)
5x - 4(-1 + 10x) = -3
expand the bracket
5x + 4 - 40x = -3
collect like terms
-35x = -7
x = 1/5
Now, substitute the value of x as 1/5
y = -1 + 10(1/5)
y = -1 + 2
y = 1
Hence, the values are 1/5 and 1
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