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Question: Absentees. The National Center for Education Statistics monitors many aspects of elementary and secondary education nationwide. Their 1996 numbers are often used as a baseline to assess changes. In 1996 34% of students had not been absent from school even once during the previous month. In the 2000 survey, responses from 8302 students showed that this figure had slipped to 33%. Officials would, of course, be concerned if student attendance were declining. Do these figures give evidence of a change in student attendance?
a) Write appropriate hypotheses.
b) Check the assumptions and conditions.
c) Perform the test and find the P-value.
d) State your conclusion.
e) Do you think this difference is meaningful? Explain.
What type of shape would you expect the histogram of the sample size to have? What value would you estimate for the mean of the histogram of sample means?
A) Use your calculator to fnd the indicated? z-scores shown in the graph. to the left 0.0244 and to the right is 0.0244
motion picture industry read the motion picture industry case study and using this data set please provide a managerial
The second plane's speed is also normally distributed with mean and standard deviation 500and 10,respectively. What is the probability that plane 2 did not catch up to plane one after two hours of flight?
Give combinations of cars and cdrs that will pick 7 from each of the following
Suppose you want to model the age y of onset of the disease as a function of number x of repeat gene sequences in SCA1 chromosomes. Propose a quadratic model for y.
A battery manufacturer looks at samples of 30 batteries at the end of every day of production and notes the number of defective batteries.
Assume that 13% of people are left-handed. If we select 5 people at random, find the probability of each outcome described.
Either we have prayer in our public schools or the moral fabric of society will disintegrate. The choice should be obvious.
Generally, what is the shape of the histogram for the variables that are well described by the Empirical Rule?
Standard deviation of 0.17 ounces, assuming the weight of cereal is normally distributed, determine the likelihood that a package will contain more than 12.2 ounces?
Determine the least-squares regression line for predicting the rate of collision claims on the basis of theft frequency rating.- Calculate and interpret the values of r and r2.
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