Answer:
1) 4/10
2) 2/8 and 4/16
3) $13,592
4) 216 cards
5) 6 stickers
6) Subtract 2 then add 3
Step-by-step explanation:
1) Since the fraction is already reduced, multiply top and bottom by a positive integer bigger than 1
2) Same as number 1
3) Multiply 1,699 by 8, 1699*8=13592
4) Multiply 18 by 12, 18*12=216
5) Find the remainder after dividing 41 by 7
6) 8 subtract 2 is 6, add 3 is 9, subtract 2 is 7, add 3 is 10, and so on…
Answer: voluntary response sampling
Step-by-step explanation:
Based on the information given in the question, the sampling technique that is being used is the voluntary response sampling.
A voluntary response sampling refers to a sample which is gotten when a researcher tells the members to join a particular sample and then the ones that are interested then joins. Such participants volunteer voluntarily and take part in the research studies and give their opinions on the topic.
Since the student organization at a local college posted a poll on its website and the interested students took part, it is a voluntary response sampling.
Answer:
2.35%
Step-by-step explanation:
First, calculate the difference between mean and the months in the problem:
first month :59 – 26 = 33
second motnh: 59 – 37 = 22
Since standard deviation is 11 months, for the first month is a difference of 3 standard deviation and for the second is 2 standard deviation.
the 68-95-99.7% rule establish that:
1 standard deviation means a 68% of total area under the normal distribution. On one side is half = 34%.
2 standard deviations means a 95% of total area under the normal distribution. On one side is half = 47.5%.
3 standard deviation means a 99.7% of total area under the normal distribution. On one side is half = 49.85%.
The difference between 3 and 2 standard deviation is
49.85 – 47.5 = 2.35%
The answer is 2.35% of cars that remain in service between 26 and 37 months
