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Perform appropriate statistics for each of the following variables in the data file "binge.save" 1) age, 2) gender, 3) race, and 4) class. The choice of statistics should be either percentage with bar chart (for categorical/discrete variables), or the mean and standard deviation for continuous/ratio variables. For categorical variables, you should create a chart.
Write a brief summary report on the demographic and class distribution of this sample. Paste the tables and charts into your report and label each of them properly. Statistics should follow a general statement in parentheses as supporting evidence.
Example 1: A majority of the survey respondents are married (married = 68%, single = 32%).
Example 2: Table 2 summarizes the income distribution of the sample. The average household income of this group is $55,000 with the standard deviation = $6,700.
Calculate a 95% confidence interval on the average weight of packaged mustard seed. Explain very carefully to the packaging workers what the 95% confidence interval numbers mean. Include your Excel output. Is there anything you would want to note ..
The student with the 92 found a grading error on her exam and her correct grade was 95. There were no other grading errors. After correcting this student's paper, the five number summary for the midterm exam will be
What are the hypotheses we would want to test for the Kleenex case?
Let Z be a standard normal random variable. Determine the value of c such that P (Z > c) = 0.1251 is there a way to do this step by step so i can understand it?
A prof. can't decide how to vote on a tuition increase for the students at her univ. The incrase is supposed to pay for new student parking and there appears to be mixed feelings. The prof.
Sample of six car washes averaged $5.70 and had the sample standard deviation of $1.30. Suppose the normal population, use critical value method to test claim at a= 0.05.
He is sorry but there is a 99.9% (1-0.001) chance that you have HIV. Is he correct? What is the actual probability that you are HIV positive?
Dana and Cathy are playing tennis. The probability that Dana wins at least one out of two ames is 0.3. What is the probability that Dana wins at least one out of four?
Motorola takes two weeks to supply an order. if the store manager is targeting a fill rate of 99%, what safety inventory should the store carry? What should its ROP be?
To find out the proportion of the population of likely voters who agree the statement. Could we say among appropriate statistical certainty which the proportion of the population of likely voters.
Which of the following does not explain a possible relationship between variables when the null hypothesis is rejected?
If we were to repeat an experiment a large number of times and calculate a statistic such as the mean for each experiment, the distribution of these experiments would be called?
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