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Question: Explain the two-step flow of communication and how it can be an effective means by which campaigns can influence people with their message aside from direct exposure. Please explain your solution.
The business estimates the true population standard devuation is around $2,400.If yhe confidence level is 90%, find the required sample size in order to meet the desired accuracy.
suppose that weights of american adult males is normally distributed with mean 165 pounds and standard deviation 15
A teacher at a community college sent out questionnaires to evaluate how well the administrators were doing their jobs.
If you violate the INDIVIDUAL nature of the assignment, document the unauthorized help you receive by name and by the nature of the help received. There will be an academic penalty depending on the extent of the unauthorized help, but you will not..
question 1 if 100 random samples of size n were drawn and if for each a 99 confidence interval fornbspmu was computed
Use the normal approximation to the binomial with a correction for continuity. Round your answer to at least three decimal places. Do not round any intermediat
b. If X has a standard normal distribution, use part (a) to write the integral that equals P(X2 ≤ y). Then differentiate this with respect to y to obtain the pdf of X2 [the square of a N(0, 1) variable]. Finally, show that X2 has a chi-squared distri..
1. Calculate the residuals from the least-squares fitted model for the pH mea surement data set phmeas .txt and plot them against the fitted values. What does this indicate about the fitted model?
Indicate which of the following situations involve descriptive statistics and which involve inferential statistics:
Debt refinancing When a debt is refinanced, sometimes the term of the loan (that is, the time it takes to repay the debt) is shortened.
A headline in the Sacramento Bee (11 December 1997, p. A15) read, "Study: Daily drink cuts death," and the article began with the statement.
What are its mean and median - What is the procedure for using mean and median to determine whether the data is skewed, and if so, in what direction?
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