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Choose a variable (such as number of daily admissions at a local theater or number of miles students have to commute daily to get to their college.) Before collecting the data, decide what a likely average might be, then complete the following:
a. Write a brief statement of purpose of the study
b. Define the population
c. State the hypotheses for the study
d. Select an a value
e. State how the sample was selected
f. Show the raw data
g. Compute the test statistic
h. Find the critical values(s)
i. State the decision
j. Summarize the results
A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40. Compute the probability the sample mean is:
The lifetime of African Cichlids is unknown but the sample of 75 cichlids were taken and its mean life time was 5.2 years with a margin error of 420 days for 95% confidence a) What is the 95% confidence interval for the lifetime of the African fish..
You have been research for your statistics class on how nervous the American adults are in general, you have decided to use HINTS 2007 data set that has a scale (going from 0 to 24)measuring the psychological distress of the respondents.
Statistics is science of conducting studies to: Solve a system of equations.
What is the probability that the next 100 customers will spend an average of less than $56 on dinner?
Show that someone will think that the claim has more than a fifty percent chance of being true if p > q / (1 + q). Explain.
The regression equation is Y = 29.29 - 0.96X, the sample size is 8, and the standard error of the slope is 0.22. What is the critical value to test the significance of the slope at the 0.01 significance level?
Plan the scatter diagram
He reviews the last eight months at dealership B and finds the standard deviation of the eight monthly sales to be 22.95. Using the .01 significance level does the analyst find evidence that the boast of dealership A is correct?
Carry your intermediate computations to at least four decimal places. Round your answer to at least two decimal places.
A sample of 81 business managers on the West Coast had an average breakfast cost of $7.65. 13. At a = 0.05, what is the test value?
Lotto, a lottery game conducted by the Ohio State Lottery Commission, consisted of selecting six numbers from the 42 numbers 1, 2, ...,41, 42.
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