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local brewery distributes beer in bottles labeled 24 ounces. A government agency thinks that the brewery is cheating its customers. The agency selects 50 of these bottles, measures their contents, and obtains a sample mean of 23.6 ounces witha standard deviation of .70 ounces. Use a .01 level of significance to perform a z-teston the agencys claim that the brewery is cheating its costumers. show all work for making the decision using critical regions. Include the null and alternative hypothes, name the test being used, find the correct test statistic, the critical statistic, and a diagram.
Using the Student's t distribution statistical table, determine 1.645 value. Describe why t distribution approaches z distribution as sample size gets larger.
In a random sample of 328 florida public school employees, 231 were female. write a 95% confidence interval for the proportion of the population of florida public school employees that are female.
Find the correlation coefficient for the data. Find the equation for the regression line for the data and predict the final grade of a student who misses 3.5 days.
Weight of the .5 cubic yard bag of landscape much is normally distributed with mean of 40 pounds and standard deviation of 1. Determine the probability that the bag will weigh more than 40 pounds?
Define decision variables clearly. Formulate this as a linear programming problem and solve it with a detailed description of your output. Please include all output information.
Forecast quarterly demand where x = 0 in second quarter of last year. Quarterly seasonal factors are Q1=1.5, Q2=0.8, Q3=1.1, Q4=0.6. Determine the forecast for last quarter?
Afterward, each mouse is given a hyperactivity rating score. The mean score was x_bar = 14.9 and s = 2.8. Give a 95% confidence interval for the population mean score μ.
Find would be answer to part(a) if there were only single server which can serve customers twice as fast (i.e, with service rate four customers per hour)?
In the accompanying table, the random variable x represents the number of televisions in a household in a certain country. Determine whether or not the table is probability distribution. If it is a probability distribution, find its mean and stand..
Show the sampling distribution of p if a random sample of 150 insured individuals is used to estimate the proportion having received at least one ticket.
The progress report of a research analyst to the supervisor stated: "All the estimated regression coefficients in our model with three predictor variables to predict sales are statistically significant.
For the most recent year available the mean annual cost to attend a private university in the US was $26,889. Assume the distribution of annual costs follows a normal probability distribution and the standard deviation is $4,500. 95% of all studen..
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