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The article measured capability of gauge by measuring weights of 2 sheets of paper. Data is in the table.
a) Check suppositions that data from each sheet are from normal dist.
b) Test hypothesis that mean weight of 2 sheets are equal against alternative that they are not(suppose equal variances). Use α=0.05 and suppose equal variances. Determine the P value.
c) Repeat previous test with α=0.10
d) Compare your answers from parts b and c an describe why are they the same or why are they different.
e) Describe how questions in parts b and c could be replied with confidence intervals.
An old saying in golf is "you drive for show and you putt for dough." The point is that good putting is more important than long driving for shooting low scores and hence winning money.
These can have a large impact on tenure and promotion decisions at many institutions. One particular instructor had ratings in 3 courses in one semester as given by the table below for the statement "The instructor is an excellent teacher.
Determine the value of correlation coefficient between these 2 variables?
Find the area under the normal distribution curve between z = 1.52 and z = 2.43.
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
It has been claimed that women live longer than men; however, men tend to be older than their wives. Ages of sixteen husbands and wives from England were obtained. These data should be analyzed with a
Based on the result, does there to be an overall perception of 1 minute that is reasonably accurate?
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
Which of the following events are disjoint and What proportion of the females rated their intelligence less than 7.
It has been claimed that women live longer than men; however, men tend to be older than their wives. Ages of sixteen husbands and wives from England were obtained. The null hypothesis of equality of means is rejected. What conclusion can be made f..
A statistics instructor wants to know which route will get her to school the fastest. Each day from October 2 to November 15, when she gets to the turn point she checks the odometer on her car
Which of the following measures only the strength of a relationship?
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