Mathematics, 07.04.2020 23:38, makylahoyle
The National Assessment of Educational Progress (NAEP) includes a mathematics test for eighth-grade students. Scores on the test range from 0 to 500. Demonstrating the ability to use the mean to solve a problem is an example of the skills and knowledge associated with performance at the Basic level. An example of the knowledge and skills associated with the Proficient level is being able to read and interpret a stem-and-leaf plot. In 2015, 136,900 eighth‑graders were in the NAEP sample for the mathematics test. The mean mathematics score was ¯ x = 282 . We want to estimate the mean score μ in the population of all eighth‑graders. Consider the NAEP sample as an SRS from a Normal population with standard deviation σ = 110 .1) If we take many samples, the sample mean xbar varies from sample to sample according to a Normal distribution with mean equal to the unknown mean score μ in the population. What is the standard deviation of this sampling distribution?2) According to the 95 part of the 68-95-99.7 rule, 95% of all values of x fall within on either side of the unknown mean μ.What is the missing number?3)The 95% confidence interval for the population mean score μ based on this one sample is between and .
Answers: 1
Mathematics, 21.06.2019 19:30, bxbykyah
You have learned about the six trigonometric functions, their definitions, how to use them, and how to represent them graphically. the sine, cosine, and tangent trigonometric functions can be paired with their reciprocal functions, cosecant, secant, and cotangent, respectively. think about how each function is related to its reciprocal function. how are the graphs of the reciprocal functions related to their corresponding original functions? what happens to the graphs of the reciprocal functions as x approaches the zeros of the original functions? describe how you would teach friends with different learning styles (visual-spatial, aural-auditory, verbal-linguistic, physical-bodily-kinesthetic, logical-mathematical, social-interpersonal, and solitary-intrapersonal) how to graph the reciprocal functions
Answers: 2
Mathematics, 21.06.2019 19:40, jennifercastillo1233
If w = 6 units, x = 3 units, and y = 5 units, what is the surface area of the figure? 168 units2 240 units2 144 units2 96 units2
Answers: 1
Mathematics, 21.06.2019 20:00, GreatBaconGamer
Solve for x and y a x= 13.3 y= 16.7 b x= 23.3 y= 12.5 c x= 7.5 y= 16.7 d x=7.5 y= 12.5
Answers: 1
The National Assessment of Educational Progress (NAEP) includes a mathematics test for eighth-grade...
Computers and Technology, 02.04.2020 18:47