The scores of a certain population on the wechsler intelligence scale for children (wisc) are thought to be normally distributed with mean m and standard deviation s = 10. a simple random sample of 25 children from this population is taken and each is given the wisc. the mean of the 25 scores is x = 104.32. based on these data, a 95% confidence interval for m is a) 104.32 â± 0.78. b) 104.32 â± 3.29. c) 104.32 â± 3.92. d) 104.32 â± 19.60

What is the equation of the line that passes through (-3, -1) and has a slope of 2/5 ? put your answer in slope-intercept form. a y= 2/5x+1/5 b y=2/5x-1/5 c y=-2/5x-1/5

To prove a polygon is a rectangle, which of the properties listed must be included in the proof?

Module 2 homework: descriptive statistics 40206 module 2: homework 56 randomly selected students were asked how many siblings were in their family. let x represent the number of pairs of siblings in the student's family. the results are as follows: # of siblings 1 2. 4 10 frequency 13 6 10 10 round all yeur answers to 4 decimal places where possible. the mean is: the median is the sample standard deviation is the first quartile is the third quartile is: what percent of the respondents have at least 3 siblings? % 83% of all respondents have fewer than how many siblings?