Answer:
a) 4 months
b) $600
Step-by-step explanation:
1. x - number of months the total amount paid to be the same for both stores.
2. That same amount for store A: 
3. That same amount for store B: 
4. Since it's the same amount for both stores we can make an equation:
5. To find that same amount, we can use either side of above equation:
This question is incomplete because the options are missing; here is the complete question:
Kareem wants to find the number of hours the average sixth-grader at his school practices an instrument each week. Which is the best way Kareem can get a representative sample?
A. He can randomly survey 50 boys in the school.
B. He can survey 30 students in the school band.
C. He can randomly survey 50 6th graders in the school.
D. He can survey 20 friends from his neighborhood.
The correct answer is C. He can randomly survey 50 6th graders in the school.
Explanation:
A representative sample is a portion of a population that shows the characteristics of all the population. In this context, for a sample to be representative it needs to include only individuals of the population that is studied. Also, ideally, individuals should be selected randomly as this guarantees the sample is not influenced by the researcher. According to this, option C is the best as this is the only one that focuses on the target population (6th graders) and the sample is random, which contributes to the sample being objective and representing the behavior of 6th-graders.
93.
EXPLANATION:
Add all the numbers together
- that from 360
93
"The exponential growth in popularity of administrative jobs among the Indian youth is clearly seen with the surging number of applicant appearing in UPSC IAS exam which is around 5 lakh every year and many more applicants trying their luck in the respective State PCS exams also. Although the chances of success in UPSC IAS Exam and State Civil Service exams are abysmally low (less than 1% at times) but the prestige and privileges attached to this job profile still manages to attract a huge intelligentsia.
Let’s understand the basic difference in service code of IAS and PCS officers."
-Jagran Josh
Example 1 – Constructing a frequency distribution table
Divide the results (x) into intervals, and then count the number of results in each interval. ...
Make a table with separate columns for the interval numbers (the number of cars per household), the tallied results, and the frequency of results in each interval.
