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What proportion of the first 70 digits in the table are 0s (there are 40 digits in line 101 followed by the first 30 in line 102)? This proportion is an estimate, based on 70 repetitions, of the true probability, which in this case is known to be 0.1. Your answer should be expressed as a proportion (decimal number) accurate to 2 decimal places.
Historically the average age of European soccer players is reported as 26 years with a standard deviation of 4 years. A random sample of 81 European professional soccer players has an average age of 27 years.
Find the degrees of freedom for unequal variance test. (Round down your answer to the nearest whole number.) State the decision rule for .05 significance level. (Round your answer to 3 decimal places.)
Let X equal the weight in grams of a 52-gram snack pack of candies. Assume that the distribution of X is N(μ, 4). A random sample of n = 10 observations of X yielded the following data:
Using a significance level of 0.05 I want to conduct 3 hypothesis tests using the data below. I need to state my alternative and null hypotheses and test a claim about a proportion.
An experiment consists of selecting a card at random from a 52-card deck. Refer to this experiment and find the probability of the event.
Select the appropriate word to identify whether the measurement represents a categorical variable or a quantitative variable: The average number of minutes a person watches television each day.
There were 3 defectives in the first batch and 5 in the second. Find a 95% confidence interval using the plus four method for the difference in the proportion of defectives.
Use the binomial distribution formula to calculate the probability that:
When such digits are randomly generated, what is the distribution of those digits? Given such randomly generated digits, what is a test for "goodness-of-fit"?
Standard deviation 2.8 inches. (a) If you choose one student at random, what is the probability that he is between 69 and 71 inches tall?
What are the probabilities of accepting lots that are 10 percent, 20 percent, and 30 percent defective? Estimate the probability of accepting a lot that is 15 percent defective.
Where should the warranty limits be set so that only 10% of the TVs need repairs at the manufacturer's expense?
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