Mathematics, 06.05.2020 04:42 jacelee17631
The National Assessment of Educational Progress (NAEP) gives a math assessment every year to 12th graders in the U. S. On the math test, a score above 275 indicates that a student has the skills to balance a checkbook. For a random sample of 500 young men, the mean NAEP math score is 272 with a standard deviation of 78. Do we have evidence to support the claim that young men nationwide have a mean score below 275? The null and alternative hypotheses are H 0: μ = 275, H a: μ < 275. The level of significance is 5%. The t-test statistic is −0.86 with a P-value of 0.20. What is the correct conclusion? Group of answer choices The evidence suggests that young men nationwide have a mean score less than 275. We do not have enough evidence to conclude that the mean score is less than 275 for young men nationwide. The evidence suggests that young men nationwide have a mean score equal to 275. It is likely that these 500 young men have a mean score less than 275.
Answers: 1
Mathematics, 21.06.2019 16:30
Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?
Answers: 1
Mathematics, 21.06.2019 20:40
Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?
Answers: 3
The National Assessment of Educational Progress (NAEP) gives a math assessment every year to 12th gr...
Computers and Technology, 29.06.2019 01:10
History, 29.06.2019 01:10
Mathematics, 29.06.2019 01:10
German, 29.06.2019 01:10
History, 29.06.2019 01:10
Mathematics, 29.06.2019 01:10
History, 29.06.2019 01:10