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Four young children were monitored closely over a period of several weeks to measure how much they watched violent television programs and their amount of violent behavior toward their playmates. The results were as follows:
Child's Code Number
Weekly Viewing of Violent TV (hours)
Number of Violent or Aggressive Acts Toward Playmates
G3368
14
9
R8904
8
6
C9890
1
L8722
12
Determine the mean and standard deviation of this distribution?
A savings account was opened for a baby on 1985 with a $100 deposit. No withdrawals or deposits occurred since the account was opened. The current balance of the account is $246.47. Measured in dollars of the year in which the account was opened, how..
Evaluate z statistic for the Wilcoxon rank sum test, standard deviation for the Wilcoxon rank sum test and P-value for the Wilcoxon rank sum test
What is the null and alternative hypothesis? What is your final conclusion?
The null hypothesis is that there was no change in average liquor consumption. State this formally in terms of µ.
If the sample standard deviation of the sample was $630 also the sample size was 50. Findout the 90% confidence interval of true mean.
What is the probability of a fatal accident over a lifetime?
You are considering adding a new food product to your store for resale. Explain how many units of the new product should be purchased for resale.
Using the dataset, produce a graph of per capita GDP for Argentina, China, and Canada from 1965 to 1995. Is inequality between these countries increasing?
Below you are given a partial computer output based on a sample of 21 observations, relating an independent variable (x) and a dependent variable (y).
Find a 90% confidence interval for the difference between the proportion of men and the proportion of women who approved of Reagan's performance. What assumption do you make to use this method?
It has been evaluated that 30% of all farms are family-owned. In sample of 12 farms, determine the probability that exactly 3 farms are family owned?
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