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A coin was flipped 60 times and came up heads 36 times. What is the critical value you would use to test whether the proportion of heads is greater than 0.50 at a 10% level of significance?
Evette has 41 1/2ft. of string. She wants to cut it into pieces 3 3/4ft. long. How many pieces of string will she have? how much string remains, if any?
The sample size n, the sample means, and the sample standard deviations for the two groups are given
A member of Congress wants to determine her popularity in a certain part of the state. She indicates that the proportion of voters who will vote for her must be estimated within plus or minus 2 percent of the population proportion.
Service times are exponentially distributed and average 24 per hour. Customers that arrive when all seats are taken do not enter the diner. The probability that there are no customers in the diner is?
Determine the probability of randomly selecting 10 production employees on hot summer day and determining that none of them are absent?
To find weighted aggregate price index using Laspeyres and Paasche method.
What are some differences between discrete and continuous data? Is the measurement of money continuous or discrete? Explain. Can discrete data be analyzed using a normal distribution? Why or why not?
The Quick Change Oil Company has a number of outlets in the Seattle area. The daily number of oil changes at outlet in past twenty days are:
Predict the final average of a student who made an 83 on the first test. Give the value of r and r squared for this model. Interpret the value of r squared in the context of this problem.
Use the frequency chart on the age of actors and when they won a prestigious award and construct a corresponding histogram.
A teacher claims that the variance on a calculus test is 68. A sample of 28 students had a standard deviation of 5.8. Test the teacher's claim at the 0.05 level of significance.
Comment on your statistical findings? Do you agree with your initial statement regarding the preference of an ANOVA over a t-test when examining more than two groups?
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