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You compute the components of a one-way ANOVA table, and you find MSB = 12 and MSW = 2. The critical value for the F test is 2.45. What is your test decision?
Suppose you form a confidence interval for a sample average and the population standard deviation is known. What happens to the width of the confidence interval as the sample size (n) increases?
Use the given information to find the P-value. Also, use a 0.05 significance level and state the conclusion about the null hypothesis (reject the null hypothesis or fail to reject the null hypothesi
Assume grape prices for a region are normally distributed. Does the data you obtained provide enough evidence to support your belief? Conduct a hypothesis test at 1% level of significance and clearl
According to a recent research report, the average monthly household mobile phone bill is $73. Suppose monthly household mobile phone bills are normally distributed with a standard deviation of $11.
The number of calls received by a phone operator at an emergency department between 10-11am has a Poisson distribution with a mean of 12.
What is the expected number of customers who credit card bill in full?
Explain the concept of time value of money and how this can be applied in your life. Explain capital budgeting and why the internal rate of return is important to an organization.
Suppose that 85% of Australian adults in the 18-34 years category think that ‘Made in Australia' ads boost sales or use social media. If an Australian adult in the 18-34 years category is rand
Find the area under the standard normal curve between z = 0 and z = 2.34. Round the answer to 4 decimal places.
Find a linear function G(p) that gives the number of gallons sold as a function of the price of the milk. How many gallons would she then expect to sell at $2.99 per gallon?
Using the Data Analysis Tool in Excel, calculate the descriptive statistics. Briefly explain what each of the metrics in the summary statistics means.
Explain the terms: simple random sampling, systematic sampling, stratified sampling, cluster sampling.
Use the F test to determine the overall significance of the relationship. What is the conclusion at .01 level of significance?
Explain how measure of central tendency and measure of dispersion are complementary to each other to describe the data
Using these data, develop an estimated regression equation relating the top speed with the boat's beam and horsepower rating.
The next roll inspected is of length 250 m and has 15 non conformities. Is there reason to believe that this roll is significantly worse than the other rolls?
Suppose that the previous long run average for the number of items returned was 5 per day. Recalculate the control limits and evaluate the results in light of this information.
Calculate the center line and 3-sigma control limits for the p (or np) chart. Out-of-control signals are also indicated by "at least two out of three consecutive points beyond 2-sigma". Construct a
Use these data to develop an estimated regression equation to estimate the price of a day hiker and backpacking boot given the upper support rating.
Construct X and s charts to show that the process in statistical control. (If you are constructing the charts manually, you only need to use the last two columns)
a. Develop a scatter diagram with price as the independent variable. b. What does the scatter diagram developed in part (a) indicate about the relationship between the two variables?
Suppose specifications are 0:30250 _ 0:00100. Calculate cp. Discuss briefly the capability of the process and how process performance can be improved.
Plot ¯X and R charts based on the data above. What center line and control limits would you recommend for controlling future production? You can assume that out control points are due to assign
Develop an estimated regression equation that can be used to predict annual sales given the years of experience.