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You want to estimate the number of students who bring their lunch to school every day. Which of the following is the best sample for this situation?(1 point)
Responses
all members of the Math Club
all members of the Math Club
45 first-year students selected at random
45 first-year students selected at random
50 female students selected at random
50 female students selected at random
80 students selected at random during lunch
80 students selected at random during lunch would be the best sample for this situation as it is more representative of the entire student population and would provide a more accurate estimate of the number of students who bring their lunch to school every day.
A coffee shop owner is interested in determining what people think about the new coffee flavor. Which of the following is the population in this situation?(1 point)
Responses
100 random customers
100 random customers
the first 50 customers who bought the new coffee
the first 50 customers who bought the new coffee
all customers who bought the new coffee
all customers who bought the new coffee
all customers who did not buy the new coffee]
The population in this situation would be all customers who bought the new coffee, as the coffee shop owner wants to know what people think about the new coffee flavor. So, the opinion of all customers who bought the new coffee would be representative of the entire population's view.
So whats the right ansere
The correct answer is "all customers who bought the new coffee", as it represents the entire population of interest for the coffee shop owner's research question.
Tom wants to know the average number of musical instruments students in his school play. He used the school’s two band classes, consisting of a total of 48 students, as his representative sample. He concluded that students in his school play an average of three musical instruments. Is his conclusion valid?(1 point)
Responses
No, because he did not choose students randomly.
No, because he did not choose students randomly.
Yes, because all members of the sample play at least one musical instrument.
Yes, because all members of the sample play at least one musical instrument.
Yes, because the sample includes both males and females who play musical instruments.
Yes, because the sample includes both males and females who play musical instruments.
No, because his representative sample is too large.
No, because his representative sample is too large.