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On the average, each can of paint contains 105 of the chemical, how many cans of paint should the sample contain if the researcher wants to be 98% certain of being within 1% of the true proportion of this chemical. Show work
1. Researchers tested farm-raised salmon from two different farms for organic contaminants. One measure they collected was the concentration of the carcinogenic insecticide mirex (parts per million).
question 1aa random sample of 25 was drawn from a normal distribution whose standard deviation is 5. the sample mean
Data analysis must be completed using a statistical software package - either Statistix for Windows, with the MegaStat add in, SPSS, SAS, R or any other legitimate software package.
Formulate and test the appropriate hypotheses at a 2% level of significance. Use the critics, value approach
Choose a variable and collect data for a least three different groups(samples). Compare the means of the three groups using the one-way ANOVA technique. Complete the following:
A rollercoasters auditors estimate that the average daily. A Rollercoaster''s auditors estimate that the average daily loss from those illegally riding without tickets is at least(greater or equal) $295
a simple random sample of size n 125 is obtained from a population whose size is n 10000 and whose population
The instructor was trying to predict the grade on a test from the hours of work. The figure shows a scatterplot and the regression line for these data.
a bank wishes to estimate the mean credit card balance owed by its customers. the population standard deviation is
For each of the following, indicate whether the variable is ordinal or not. If the variable is not ordinal, indicate its variable type.
The owner of the Burger Doodle Resturant is considering two ways to expand operation: open a drive-up window or serve breakfast. Th increase in profits reulting from theise proposed expansions depend on weather a competitor opens franchise down th..
The percentage 'y' of impurities per batch in a certain chemical product is a beta random variable with probability density
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