Given line : y = 5
=> y = 0×x + 5
Comparing it with y = mx + c
slope of line, m = 0
Thus, this line is parallel to x axis.
A line perpendicular to it will be parallel to y axis.
So the perpendicular line will be of the form: x = k
where k is a constant.
It passes through (-7,-5)
Thus
x = k
=> -7 = k
=> k = -7
Thus, equation of perpendicular line is x = -7
Answer:a. Matched pairs t procedure
Explanation:
The matched pairs t-test is used in situations where for each respondents two measurements would be taken to find reliable difference between the measurement. Two subjects of interest can be individually matched on one or more characteristics to analyse the difference on the outcome of the particular characteristic or One group may sometimes be exposed to a treatment experimentally while the other serves as a control group or they may be equally exposed to the same experimental treatment to analyse thier differences.,
for example In finding the differences in the average prices among two local supermarket using 6 items to compare, a Matched pairs t procedure should best serve for use in this study because in this procedure, The magnitude of the t-statistic will depend on the number of subjects( in this case six random picked items) and which in conjunction with degrees of freedom are used to calculate the probability that the difference between the average prices in both supermarkets happened by chance. If the probability is less than the critical alpha level, then we can conclude that a significant difference falls between the two means.(supermarket)
OK, you have ten cans of paint worth 25 dollars a can. this gives you a grand total of 250 dollars worth of paint. Then you have 20 cans worth 30 dollars a piece, giving you a grand total of six hundred dollars. you would then add 250 to 600, giving you 850 dollars worth of paint. Then subtract 500 dollars. this will tell you that 350 dollars worth of paint was used.
-10.333=A is the answer I believe