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Heights of men on a baseball team has a bell-shape distribution with a means of 173 cm and a standard deviation of 9 cm. Using the empirical, rule what is the approximate percentage of the men between the following values?
For this same sample of n = 45, find out the width of confidence interval around population mean? Illustrate all work.
Scores on a scholastic aptitude test are normally distributed with standard deviation σ=100 points. A group of 25 inner city high school students takes the test; their mean scores is x-bar = 440 points.
MATH1550H: Assignment: Question: Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form
Make a scatter plot of Y and X1 using Word. To do this click on insert and then chart. Click on X Y (Scatter). Enter the data from the table.
We are 95% confident that the proportion of non sell-able items for Whole Fruits is anywhere between 6.4% and 15.6% HIGHER than the proportion of non sell-able items for Green Grocer.
Suppose that you are conducting a survey of customer satisfaction regarding their cellular phone. If you called 11 households selected at random, what is the probability that:
For the sheet-metal stamping machine in certain factory, the time between failures, X1 has a mean between the failures, of 56 hours and a variance of 16 hours.
Determine the test value? Use α = 0.05. (Use the variances unequal formula).
An electronic company is about to launch a new product.if the serial number for each piece produced has the following format:LLNNN where L stands for any letter in English and N is a number from 0 to 9,what is the name of the counting rules used t..
For a t distribution with 16 degrees of freedom, find the area, or probability, in each region.
What if the assumption E[u/x]=0 is not satisfied? Illustrate using an example. Explain the relationship represented by a population regression function.
If one invested in Stock A, Determine standard deviation of percentage return?
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