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The average weight of 40 arbitarily selected minivans was 4150 pounds. Standard deviation was 480 pounds. Determine a point estimate of population mean. Determine the 99% confidence interval of true mean weight of the minivans.
Develop a 99 percent confidence interval for the population proportion.
The table below contains the opinions of a sample of 200 people (broken down by gender) about the latest congressional plan to fund abortion clinics.
Chocolate bars produced by a certain machine are labeled with 8 oz. The distribution of the actual weights of these chocolate bars is Normal with a mean of 8.1 oz and a standard deviation of 0.1 oz. What proportion of chocolate bars weighs less th..
A consumer organization wants to know whether there is a difference in the price of a particular toy at three different types of stores.The price of the toy was checked in a sample of five discount stores, five variety stores, and five department ..
Describe what you find then produce an ANOVA for the problem.
By using the normal probability distribution, what is the probability the car will be repaired in 35 minutes or less?
What is the probability that a cereal would be high calorie, given that is low fiber? In other words, what is P (high calorie, given low fiber)?
Identify a key variable that you want to predict, and specify at least two variables that you think would be key in making that prediction.
Find the critical values and identify the rejection regions. Calculate d and sd. Use the t-test to find the standardized test statistic t. decide whether to reject or fail to reject the null hypothesis.
In a study of elephants a researcher wishes to determine the average weight of a certain subspecies of elephants. From previous studies, the standard deviation of the weights of elephants in this subspecies is known to be 1500 pounds.
What is Bayesian sample size determination for ANOVA and regression with formula?
A survey of 85 families showed that 36 owned at least one DVD player. Find the 99% confidence interval estimate of the true proportion of families who own at least on DVD player.
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