Mathematics, 25.10.2021 15:40 ZBSJ
The SAT is the most widely used college admission exam. (Most community colleges do not require students to take this exam.) The mean SAT math score varies by state and by year, so the value of µ depends on the state and the year. But let’s assume that the shape and spread of the distribution of individual SAT math scores in each state is the same each year. More specifically, assume that individual SAT math scores consistently have a normal distribution with a standard deviation of 100. An educational researcher wants to estimate the mean SAT math score (μ) for his state this year. The researcher chooses a random sample of 656 exams in his state. The sample mean for the test is 480.
Find the 95% confidence interval to estimate the mean SAT math score in this state for this year.
(Note: The critical
z
-value to use,
z
c
, is: 1.960.)
( , )
Answers: 2
Mathematics, 21.06.2019 14:30
Which system of linear inequalities is represented by the graph?
Answers: 2
Mathematics, 21.06.2019 19:00
Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1
Answers: 1
Mathematics, 21.06.2019 21:30
*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer
Answers: 1
Mathematics, 21.06.2019 23:40
Determine the standard form of the equation of the line that passes through (-2,0) and (8,-5)
Answers: 1
The SAT is the most widely used college admission exam. (Most community colleges do not require stud...
Chemistry, 09.05.2021 14:00
Business, 09.05.2021 14:00
World Languages, 09.05.2021 14:00
English, 09.05.2021 14:00
Computers and Technology, 09.05.2021 14:00
Business, 09.05.2021 14:00
Mathematics, 09.05.2021 14:00
Computers and Technology, 09.05.2021 14:00