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Compute a 99% confidence interval for the population mean, based on the sample 52, 50, 51, 54, 55, 52, and 53. Change the number from 53 to 14 and recalculate the confidence interval. Using the results, describe the effect of an outlier or extreme value on the confidence interval.
Four movies are randomly selected. Their lenghts were 110, 96, 125, and 136 minutes. Find a 95% confidence interval of the average of the lenghs of the movie.
Population standard deviation of 5 and you select a sample size of 100, what is the probability that the sample mean is between 47 and 49.5?
Suppose a large sample is selected (instead of just 10). About 95 percent of the predictions regarding sales would occur between what two values?
the wechsler iq test has a normal shape withnbspmu100 andnbspsigma15. nbspif you take a random sample of n144 students
We have a deck of 52 playing cards. What is the probability of drawing?
Determine whether there is a difference in the mean weights of candies of different colors. Use the .05 significance level.
What have you learned about statistics?" In developing your responses, consider - at a minimum - and discuss the application of each of the course elements in analyzing and making decisions about data (counts and/or measurements).
The firm uses $200,000 of its cash balance to pay off a current liabilities. Calculate the current ratio before and after this transaction.
Suppose there are two elementary schools in a county. One school (A) loans all its students a laptop computer for use in classes. The other (B) does not
List the sample space. Determine the exact probability of creating a mini license plate with an E. Give solution exactly in reduced fraction form.
Determine the probability mass function of the salesperson's November sales (in $). What is the probabiity that his sales for November will be less than 100k? Find the mean and standard deviation of the November sales.
Can you conclude that the information in the article is untrue? Use the 0.05 significance level. Determine the p-value and explain its meaning.
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