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The mean and the standard deviation of the sample of 40 trash bag breaking strengths are 50.575 and 1.6438, respectively. ( 1) Test H 0 : m 50 versus H a : m 50 by setting a equal to .05 and using a critical value rule. ( 2) Interpret the ( computer calculated) p- value of .0164 for the test. That is, explain how much evidence there is that H 0 is false.
a researcher wishes to conduct a study on the self-esteem levels of adolescents. she believes that male adolescents
The American Sugar Producers Association wants to estimate the mean yearly sugar consumption. A sample of 16 people reveals the mean yearly consumption to be 60 pounds with a standard deviation of 20 pounds.
Define the decision rule. Calculate the value of the test statistic.
Find the probability that a random sample of 4 male Siberian tigers will have a sample mean weight more than 450 lb.
Assume the population standard deviation of unoccupied seats for all flights for this airline is equal to 4.103. Find a 90% confidence interval for μ and the mean number of unoccupied seats
Suppose that a claim is made that the average billionaire is 60 years old or younger.The following is a random sample of billionaires. Conduct the test using the 0.05 level of significance.
Create a drawing or plan for a 2 x 3 experimental design that would lend itself to a factorial ANOVA. Be sure to identify the independent and dependent variables.
what role does sample size play in the accuracy of statistical inference? why is the method of selecting the sample
What is the point estimate for the difference between the means of the two populations?
levine inc. is considering an investment that has an expected return of 15 and a standard deviation of 10. what is the
at a large university it is known that 50 of the students live on campus. the director of student life is going to take
I have a problem that wants to know the sample size of Illinois republican voters, they want to know the sample size with 95% confidence and 3% margin of error, not sure how to get started.
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