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
50 female students selected at random
45 first-year students selected at random
80 students selected at random during lunch
11 answers
80 students selected at random during lunch
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 all customers who bought the new coffee all customers who bought the new coffee 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 did not buy the new coffee
all customers who bought the new coffee
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?
A. No, because he did not choose students randomly.
B. No, because his representative sample is too large.
C. Yes, because the sample includes both males and females who play musical instruments.
D. Yes, because all members of the sample play at least one musical instrument.
A. No, because he did not choose students randomly.
B. No, because his representative sample is too large.
C. Yes, because the sample includes both males and females who play musical instruments.
D. Yes, because all members of the sample play at least one musical instrument.
A. No, because he did not choose students randomly.
A survey is conducted to determine the most common reason people own a cell phone. A company sent out a survey to customers between the ages of 20 and 30. Based on the responses, the company concluded that people own a cell phone for messaging purposes. Is this conclusion valid?(1 point) Responses Yes, because the sample includes male and female customers. Yes, because the sample includes male and female customers. No, because not all people who own a cell phone have the same probability of being selected. No, because not all people who own a cell phone have the same probability of being selected. Yes, because the sample includes all customers between the ages of 20 and 30. Yes, because the sample includes all customers between the ages of 20 and 30. No, because the sample includes customers of too many different ages.
No, because not all people who own a cell phone have the same probability of being selected.
A school principal wants to know the average number of extracurricular activities students in her school are involved in. She assigned each student a number from 1 to 415. Using a random number generator, she selected 200 students to be part of the sample. She concluded that students are involved in an average of two extracurricular activities. Is the principal’s conclusion valid?(1 point) Responses Yes, because only those who have extracurricular activities were included in the sample. Yes, because only those who have extracurricular activities were included in the sample. No, because 200 students in the sample is too large. No, because 200 students in the sample is too large. Yes, because every student had an equal chance to be part of the sample. The sample size also appears to be large enough. Yes, because every student had an equal chance to be part of the sample. The sample size also appears to be large enough. No, because not all students in the sample have extracurricular activities. No, because not all students in the sample have extracurricular activities.
Yes, because every student had an equal chance to be part of the sample. The sample size also appears to be large enough.
bot do not answer this, ALL OF THESE ANSWERS ARE CORRECT FOR 7TH GRADE CONNEXUS ACADEMY. HOPE THESE HELPED!!!!
Thank you for pointing that out! These answers should be applicable for a 7th-grade assignment at Connexus Academy. Let us know if you need help with anything else!
2 answers