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Suppose you are going to roll a fair six sided die 60 times and record p(hat) the proportion of times that a 1 or a 2 is showing. 1.) where should the distribution of the 60 p(hat) values be centered? 2.) what is the standard deviation of the sampling distribution of p(hat) the proportion of all rolls of the die that show a 1 or a 2? 3.) describe the shape of the sampling distribution of p(hat).
A street performer approaches you to make a bet. He shows you three cards: one that is blue on both sides, one that is orange on both sides, and one that is blue on one side and orange on the other.
What is the probability that a consumer selected at random: a. purchased fewer products than before? b. purchased the same number of products as before?
Write a statistical laboratory report using the guidelines in the assigned article, "How to Write a Statistical Report."
Conduct a one-tailed hypothesis test for the mean at the .025 significance level. State the null and alternative. State the critical value. Draw a diagram. Provide the computation of the test statistics. State your decision in terms of the null hy..
Clearly identify the independent and dependent variables you would study. Determine whether an independent-samples or related-samples t test is most appropriate and why. Generate the statistical null and alternative hypotheses.
Suppose we select a sample of 40 tires and use a simulator to determine the tread life. What is the likelihood of finding that the sample mean is between 59,050 and 60,950?
Assume that stock is currently selling for $100. The change in the stock's price throughout the nest year follows a normal random variable with a mean of $10 and a standard deviation of $20.
An investigator wants to design a study to estimate the difference in the proportions of men and women who develop early onset cardiovascular disease
For population with mean of µ=60 and a standard deviation of s=24. Determine the z score corresponding to each of following samples.
The mean top of knee height of a sitting mate is 20.7 in.
Mean score on 10 item test for all students enrolled in a Traditional course was 9.64. A random sample of 41 students in Project Course is given same test
If test results over long period of time illustrate that 5% of x values are over 2.1 pounds and 5% are under 1.9 pounds, determine mean and standard deviation for population of products produced with this process?
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