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For a random sample of 23 Asian countries, the variance on life expectancy was 7.3 years. What is the 95% confidence interval for the variance of life expectancy in all of Asia?
Show me step by step how to solve this problem. What identifies the equation to use?
a let x have t-distribution with 29 degrees of freedom. what is the distribution of x2?b let x and y be normal.what is
A film developer claims that the mean number of pictures developed for a camera with 24 exposer is less than 22. If the hypothesis test is preformed, how should you interpret a decision a)reject the null hypothesis and b) fail to reject the null h..
according to cnnusa today poll appox. 70 of americans believe the irs abuses its power. let x equal the number of
Is the distinction among various parts of the bell-shaped curve arbitrary or is there certain logical and rational principle involved that creates such distinctive demarcations shown in a chart like this?
a clinical trial is conducted to compare an experimental medication to placebo to reduce the symptoms of asthma. two
a for a normal distribution find the z-score that cuts off the bottom 63.66 of all the z-scores. round to 2 decimal
determine whether each of the distributions given below represents a probability distribution. justify your
Mr. price Home analyzed the value of purchase made on credit by a sample of 25 credit card customers. The simple mean was found to be R170.08 with a sample standard deviation of R21.90. Assume purchase values are normally distributed.
two children alan and belle each throw two fair cubical dice simultaneously. the score for each child is the sum of the
What is the probability that a typical family will purchase and at least 3 tubes of toothpaste in any given month?
bill is interested in the infrequent arrival of birds on a remote pacific island in the south seas. the mean number
Food intake and weight gain. If we increase our food intake, we generally gain weight. Nutrition scientists can calculate the amount of weight gain that would be associated with a given increase in calories.
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