Mathematics, 28.11.2020 04:40 davidrodriguez122001
Amanda is conducting an observational study regarding the correlation between high school start time and the average first period
year-end grade for all students at the school. She decides to observe two high schools in North Carolina, Williams High and Valley
High, for one school year. During the school year in which Amanda is observing, Williams High School begins first period at 7:35 am,
while Valley High School begins first period at 9:00 am.
At the end of the school year, Amanda finds that the average first period year-end grade for all students at Williams High School is
ten points lower than the average first period year-end grade for all students at Valley High School.
Amanda then repeats the observational study eight times with other high schools in the state of North Carolina. All studies yield the
same results.
What generalization can be made from the results of the observational study?
All high school students in North Carolina have higher grades when the school start time is later in the morning,
o
There is not enough information to generalize the study's results.
O
All students in North Carolina have higher grades when the school start time is later in the morning,
All high school students in North Carolina have higherrades when the school start time is earlier in the morning.
Answers: 3
Mathematics, 21.06.2019 18:40, rivera8
Juliana says that she can use the patterns of equivalent ratios in the multiplication table below to write an infinite number of ratios that are equivalent to 6: 10. which statement explains whether juliana is correct? she is correct because she can multiply 6 and 10 by any number to form an equivalent ratio. she is correct because 6: 10 can be written as 1: 2 and there are an infinite number of ratios for 1: 2. she is not correct because the multiplication table does not include multiples of 10. she is not correct because 6: 10 is equivalent to 3: 5 and there are only 9 ratios in the multiplication table that are equivalent to 3: 5.
Answers: 1
Mathematics, 21.06.2019 22:00, alexamorantess
Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.
Answers: 1
Amanda is conducting an observational study regarding the correlation between high school start time...
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