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The following is a cross-tabulation taken from a subset of the 2010 General Social Survey. Respondents were asked whether they had seen an "X-rated" movie in the last year. For the table below, calculate and interpret an appropriate percentage distribution. Calculate and interpret chi square and gamma.
Saw X rated movie in last year
Male
Female
Total
Yes
30
50
80
No
170
100
270
200
150
350
find the number of chocolate chips a cookie should contain on the average if it is desired that the probability of a
1 due to normality the formula for computing z is the same for a single data value as it is for an average of the data
Environmental health indicators include air quality, water quality, and food quality. Twenty-five years ago, 47% of U.S. food samples contained pesticide residues. In a recent study, 44 of 125 food samples contained pesticide residues.
the following sample was obtained from a population with unknown parameters.scores 6 12 0 3 4a. compute the sample mean
Many people do not "like" or "trust" single point estimates for things they need measured.
A few random results for you to ponder...do the results justify the conclusions? Why or why not? Give a reason why the conclusions don't necessarily follow from the statement.
Do these results suggest that the different therapies have different effects on mental health? (Use the .05 level.) a. Use the five steps of hypothesis testing.
Mean of $32,000 and a standad deviation of $3000. If 100 teachers are randomly selected, find the probability that their mean salary is greater than $32,500.
An estimated regression coefficient is 10 with a standard error of 5. The null hypothesis is that the partial regression coefficient equals one.
Perform the check regarding the sample size that confirms the sampling distribution of the possible values for will be approximately normally distributed.
How many Corolla buyers must be surveyed if we want to be 95% confident that the sample percentage is within four percentage points of the true percent all Corolla buyers?
suppose that the battery failure time measure in hours has probability density function given by fx 2 x 13 x?0.what
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