Question 509112: 1. Given the situation described, identify the type of sampling involved. A library
assigns a call number to each of its books. Using a random number generator, 150
unique call numbers are selected. The books associated with these call numbers are
pulled from the shelf and examined for signs of damage.
(Points : 5)
random sampling
systematic sampling
convenience sampling
stratified sampling
cluster sampling
2. The number of baby deliveries in a medium sized hospital was sampled over 12
hour periods. Below is the sample:
24 16 7 15 11 14 7 16 22 17
22 16 9 17 14 5 16 11 17 19
21
3. From this above data set, compute the sample mean, median, mode and midrange. Compute the 1st quartile and 3rd and interpret their meanings.
4. The number of surfer’s special burritos served was sampled during a lunch period 11:00 a.m. – 2:30 p.m. at a taco shop on a weekday. Below is the sample:
41 63 39 56 46 55 38 66 41 48
60 57 48 31 71 56 60 39 52
Construct a stem and leaf plot of the data.
5.The National Association for Women in Science asked recent high school grads if they had taken certain science classes. Of those surveyed, 32 said they had taken physics, 51 said they had taken chemistry and 15 said they had taken both. Ten said they had taken neither. How many recent high school grads were surveyed? Show your work.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 1. Given the situation described, identify the type of sampling involved. A library
assigns a call number to each of its books. Using a random number generator, 150
unique call numbers are selected. The books associated with these call numbers are pulled from the shelf and examined for signs of damage.
(Points : 5)
random sampling
systematic sampling
convenience sampling
stratified sampling
cluster sampling
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I would call it random sampling
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2. The number of baby deliveries in a medium sized hospital was sampled over 12
hour periods. Below is the sample:
24 16 7 15 11 14 7 16 22 17
22 16 9 17 14 5 16 11 17 19
21
3. From this above data set, compute the sample mean, median, mode and midrange. Compute the 1st quartile and 3rd and interpret their meanings.
---
You should be able to do these yourself. If you do not have a calculator
that generates these statistics you should get one.
1st quartile has 25% of the data below it
3rd quartile has 75% of the data below it.
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4. The number of surfer’s special burritos served was sampled during a lunch period 11:00 a.m. – 2:30 p.m. at a taco shop on a weekday. Below is the sample:
41 63 39 56 46 55 38 66 41 48
60 57 48 31 71 56 60 39 52
Construct a stem and leaf plot of the data.
Please use Google to see how stem and leaf plots are generated.
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5.The National Association for Women in Science asked recent high school grads if they had taken certain science classes. Of those surveyed, 32 said they had taken physics, 51 said they had taken chemistry and 15 said they had taken both. Ten said they had taken neither. How many recent high school grads were surveyed? Show your work.
32 + 51 -15 = 68
68 + 10 = 78 were surveyed
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Cheers,
Stan H.
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