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1. Consider the following hypothesis test:
H0: μ = 100
Ha: μ ≠ 100
A sample of 65 is used. Identify the p-value and state your conclusion for each of the following sample results. Use α = .05.
a) Xbar= 103 and s = 11.5
b) Xbar= 96.5 and s = 11.0
c) Xbar= 102 and s =10.5
Given the following frequency distribution, find out the mean, variance, and standard deviation.
Describe sample space for selecting a single person. - If you select three people, describe the sample space.- define the sample space for the random variable that expresses the number of Twitter users in the sample of size 3.
Provide an example of when it would be useful to conduct path analysis by describing a research study. Be sure to include a brief paragraph on what is meant by estimates of causality.
Write the expression below as simply as possible in its radical form. Assume that all of the variables in the expression represent positive real numbers.
Assuming the company wants to maximize revenues, develop the LP model that will indicate the optimum weekly volumes of regular and classic soda to produce.
Construct a scatter plot for the data. Do the data appear to have a positive linear correlation, a negative linear correlation, or no linear correlation? Explain.
In a shipment of 59 vials, only 18 does not have hairline cracks. 6 vials are randomly selected from the shipment. Find the probability that at least one of the 6 selected vials has a hairline crack.
What two assumptions must be met when you are using the z test to test differences between two means? Can the sample standard deviations s1 and s2 be used in place of the population standard deviations σ1 and σ2?
Solve the double inequality -tα/2,n-2 α/2,n-2 with t given by the formula of Exercise 25 so that the middle term is y0 and the two limits can be calculated without knowledge of y0. Note that although the resulting double inequality may be interprete..
a. Give the state-transition-rate diagram of the process. b. What is the fraction of time that the switchboard is blocked?
Twelve randomly selected mature citrus trees of one variety have a mean height of 13.8 feet with a standard deviation of 1.2 feet, and 15 randomly selected mature citrus trees of another variety have a mean height of 12.9 feet with a standard devi..
suppose that 65 of all adults regularly consume coffee 50 regularly consume carbonated soda and 75 regularly consume
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