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In establishing warranties on HDTV sets, the manufacturer wants to set the limits so that few will need repair at manufacturer expense. On the other hand, the warranty period must be long enough to make the purchase attractive to the buyer. For a new HDTV the mean number of months until repairs are needed is 36.84 with a standard deviation of 3.34 months. Where should the warranty limits be set so that only 10 percent of the HDTVs need repairs at the manufacturer's expense?
At.01 significance level, can we conclude that 30-year mortgage rate for small banks is less than 6%? Evaluate the p-value.
Determine the average and the variation for Brand 1 price, sales market share, and total revenue, using the weekly market survey data (descriptive statistics).
What are the expected value and variance of the following probability distribution?
Conditional and compound probabilities.The table below gives the distribution of blood types by gender in a group of 1000 individuals.
A researcher is interested in whether social assertiveness might be influenced by training procedures. Two groups of college sophomores are randomly selected. Group A subjects are assigned to the "training sessions" and Group B subjects do not rec..
Create a scatter plot for those data. Based on scatter plot, how would you explain relationship between the two variable.
Find out the crude death rate, age specific death rate, standard death rate and adjusted death rate.
Any person who is familiar with these trees understand the height of a California redwood tree which is related to another characteristics of the tree.
Any value which is based on having measured a sample is called:
Explain how many cars would required to go by the speed trap to be 99.8% sure which at least one driver will warm oncoming traffic of the speed trap.
With a single-sample t ratio, the null hypothesis states that:
In a regression analysis involving 30 observations, the following estimated regression equation was obtained.
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