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Using the ROI data set:
The mean number of words per minute read by sixth graders is 89 with a standard deviation of 16. If 66 sixth graders are randomly selected, what is the probability that the sample mean would be greater than 92.25?
consider a normal population with u42 and standard deviation 5.4. calculate the z-score for an x bar of 49 from a
which of the following pearson correlations shows the greatest strength or consistency of
A watching more than 30 hours of TV per week, and P2 = proportion of junior high students in region B watching more than 30 hours of TV per week, and Is there enough evidence at alpha = 0.01 to conclude that p1 watch more than 30 hours of TV per w..
Consider a normal population with µ = 25 and σ = 7.0. (A) Calculate the standard score for a value x of 23.
Compute the probability that a female between ages 45 and 55 who test positive for breast cancer has breast cancer, and enter your answer with 3 decimal places.
1. mention the characteristics of statistics. explain any two applications of statistics.2. distinguish between primary
in many cities the network national news is broadcast at 630 or 700 p.m. in most cities the national news is preceded
Illustrate what was the lowest score earned on the exam. Explain how many students scored within 3 standard deviations of the mean.
Evaluate the scientific merit of the selected design. How might you have designed this study differently?
use the following information to answer the question. suppose that a recent poll of american households about pet
For each of the following characteristics of an individual, indicate whether the variable is categorical or quantitative.- Length of forearm from elbow to wrist (in centimeters).- Whether or not the person has ever been the victim of a crime.
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