A random sample is also called an unbiased sample.
True
False
A company surveys every tenth person in the phone book. What type of sampling did the company use?
biased sample
self-selected sample
stratified sample
systematic sample
Fifty students were randomly selected to take part in a survey about their favorite school lunch. Each student was allowed to only pick one item. The results are shown below.
Food Item Preferred- Number of Students
pizza- 27
cheeseburger- 14
salad bar- 9
Based on the information above, if the school served 500 lunches, how many pizzas can they expect to serve?
27
270
140
90

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so false?

look at the key phrase I used "BUT"

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