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Administration of the large university wishes to evaluate what proportion of their full time engineering students are female. If she gets random sample of a 100 engineering students from day campus of which 30 students are female what would her confidence interval be if she requires the confidence level of 80%?
a) Determine the point estimate (p) for percentage of engineering students that are female?
b) Determine the suitable distribution (z or t)? and its numerical value is?
c) Determine the 80% Confidence Interval based upon above data?
Need help discussing Regression Analysis and Bulgaria. I am conducting a country analysis and need to discuss this. Please cite any references used.
Mike works in a quality at a well known saw blade company. An inpsector on his team has uncovered an issue with the kerf dimension on the bandsaw blade line.
To test whether the population mean is less than a specified value.
Develop a joint probability table for these data and use the table to answer the remaining questions. What do the marginal probabilities tell you about the age of the US population?
A producer of pleasure boats wants to maximize revenue during the next month. Two types of boats are sold, x1 and x2. Type x1 sells for $40,000 and type x2 sells for $30,000.
At the 5% level of significance test whether the bottling process is carried out accurately or whether the filling machinery needs calibration. Use both the critical and the p-value approaches.
Overall, the amount of work-hours involved in the festival preperation is normally distributed around 100 hours withn a standard deviation of 12 hours.
At the .01 significance level, can she conclude that there is a difference between how well the different tutorials work for the students?
A behavioral research situation that could use a Pearson coefficient research study and a chi square research study. Present the rationale for each selection. Be very specific in your presentation.
A sample of 4 different calculators is randomly selected from a group containing 42 that are defective and 27 that have no defects. what is the probability that all four of the calculators selected are defective?
Using the .05 level of significance: a) Is there a difference among types of gasoline? b) Is there a difference in the cars?
A battery manufacturer advertises the average life of its automobile battery is 60 months.what % of batteries should last between 50 and 70 months? The standard deviation is 10 months.
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