Proportion of heads and level of significance
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?
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To determine the mean amount of cereal dispensed by a filling machine, a random sample of 32 boxes will be selected and their contents weighed. The sample mean X will be used to estimate. Determine the probability that the estimate will be off by
From a lot of 10 missiles, 4 are selected at random and fired. If the lot contains 3 defective missiles that will not fire, what is the probability that What is the expected number of missiles that will fre?
Identify the null hypothesis, alternative hypothesis, test statistic, Critical Values, conclusion about the null hypothesis, and final conclusion that addresses the original claim.
The Bingo Hamburger Company has a chain of 12 stores in a large city. Sales figures and profits for the stores are given in the following table. Obtain a regression line for the data and predict profit for a store assuming sales of $10 million.
Suppose that you are told that this student has at least three years of work experience. What is the conditional probability that this student has at least for years of work experience.
In a given area, the probability that a person is exposed to an advertisement of Simco Paper Company is 0.30. Suppose that six people are randomly chose from among the population area.
If the test value for the difference between the means of two large samples is 2.57 when the critical value is 1.96, what decision should be made?
Suppose that the probability that the student knows the answer to the question is 0.80 and the probability that the student guesses is 0.20. If student guesses, probability of correct answer is 0.25.
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