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What is the probability that (a) the birthdays of twelve people will fall in twelve di?erent calendar months (assume equal probabilities for the twelve months), (b) the birthdays of six people will fall in exactly two calendar months?
Correlation between the two variables based on scatter plot - Show the scatter plot for the variables.
Describe whether the data appear to be approximately normally distrusted by .. a. Comparing data characteristics to theoretical properties.
Simulate 50 observations from a normal distribution with mean 0 and standard deviation 1. make a normal plot.
A sample of 25 their average life from the time they are fully charges to the time they are fully discharged is 170 minutes the sample standard deviation is 30 minutes. Test the claim that battery will last for three hours.
a random sample of 100 doctors was selected. Suppose you reject the null hypothesis. What conclusion can you draw?
The data below show the average daily high temperature for Chicago, Illinois, for twelve recent spring and summer months. Create a stem-and -leaf diagram for the data.
The following frequency distribution reports the number of frequent flier miles, reported in thousands, for employees of Brumley Statistical Consulting, Inc. during the first quarter of 2004.
The sample mean is 2.59 and the sample standard deviation is .66. Conduct the following test using 95% level of confidence.
Balls that have been thoroughly mixed. Sue and Jim, each, purchased one gumball. What is the likelihood both Sue and Jim get red gumballs?
Determine the probability the transmission will break down between 100,000 and 200,000 miles?
A student with a 3.5 to 4 grade point average who took standardized test is randomly selected. Determine the probability that students test score is less than 36.
In a certain city, 50 percent of the people consider themselves conservative (C), 25 percent consider themselves liberal (L), and 25 percent consider themselves to be independent (I).
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