Should this course be graded on a normal curve? Any curve? Why or why not?
Should this course be graded on a normal curve? Any curve? Why or why not? This...
Should this course be graded on a normal curve? Any curve? Why or why not? This is a statistics course and we are dealing woth confidence intervals.
This is a graded discussion: 10 points possible due Oct 6 The Normal Distribution Answer one of the following questions: Why do we use a bell curve to assess the normality of a variable as opposed to a square, triangle, or some other symmetrical shape? Imagine that you recently took a statistics exam and your instructor just returned your graded exam. The instructor announces that 75% of students scored below the mean. How do you reconcile this with the fact...
basic statistics
Question 1. Why is normal distribution important for many application and actually should we be dependent of normal distribution or not? Should we be independent? Combine this approach with parametric distributions.
Why should the area under the Normal Curve (i.e., under the “bell”) always be 1.0?
A student in a statistics course wanted to use confidence intervals to conduct a hypothesis test. The upper bound for the confidence interval was 1.15 and the lower bound was -0.28. What decision should be made about the hypothesis? O a. The student should reject the null hypothesis b. More information is needed to make a determination about the hypothesis test . C. The student is using confidence intervals incorrectly d. The student should fail to reject the null hypothesis
.-/ pos t i27.2.019. The distribution of heights of 18-year-old men in the United States is approximately normal, with mean 68 inches and standard deviation 3 inches (U.S. Census Bureau). In Minitab, we can simulate the drawing of random samples of 20 from this population Calc Random Data Normal, with 20 rows from a distribution with means and standard deviation 3). Then we can have Minitab computea 95% confidence interval and draw a boxplot of the data (State Statistics 1...
a standard normal table shows the area under the normal curve corresponding to any ____ or its fraction.
Question: GRAPH the rejection region, p-value and critical value. (Create the normal distribution curve) Explain why we failed to reject the null hypothesis, the significance of this ALL OF THE DATA IS ALREADY PROVIDED including the critical value, test statistics etc. YOU Don't need to solve anything just GRAPH THE REJECTION REGION, p-value, critical value. etc and explain why we failed to reject the null as provided below. DATA: According to data, 72.4% of the population in Kahului, Maui drive...
Considering the properties of the normal curve, if we know the mean and standard deviation, we are then able to calculate the ______ under the curve between any score and the mean. (0.25 Points) Range Area Mean Mode
CH13 Q3
The following statistics are computed by sampling from three normal populations whose variances are equal: (You may find it useful to reference the t table and the g table.) a. Calculate 99% confidence intervals for μ 1-2, μ1-#3, and μ2-#3 to test for mean differences with Fisher's LSD approach. (Negative values should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places. Round your answers to 2 decimal places.) Population Mean Differences Can...