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An online book store wants to determine if there is an association between coupon redemption and gender. After a special coupon broadcast to its reward members, the following data on coupon redemption at check out were collected.
What can we say about the form or way of the distribution of the average or median of the sample?
LSAT scores are normally distributed, with a mean of 150 and s = 10.
What the information do z-scores give that actual heights do no?
A researcher is interested in whether social assertiveness might be influenced by training procedures. Two groups of college sophomores are randomly selected. Group A subjects are assigned to the "training sessions" and Group B subjects do not rec..
Probability depends on normal distribution. If a random sample of nine 18 year old men is selected illustrate what is the probability that the mean height
Where should the warranty limits be set so that only 10 percent of the HDTVs need repairs at the manufacturer's expense?
Construct a test of 20 objective type items in your subject. Administer test to a group of 50 students conduct an item analysis and write a report. Explain the meaning of co-efficient of correlation. Why does the homogeneity and heterogeneity of sco..
An advantage of the permutation test over the t test for a difference in means is that - distribution interval or a bootstrap percentile interval
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
Draw and label distribution used and position of values found.
The p-value for a test statistic is .085, what is the minimum level of significance required to reject the null hypothesis?
Calculate separately for 1983 and 1987, the 95% confidence interval for the proportion of students who had driven an automobile while drinking.
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