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Find the standard deviation for the given sample data. Round your answer to one more decimal place than is present in the original data.
The manger of an electrical supply store measured the diameters if the rolls of wire in the inventory. The diameter of the rolls (in meter) are listed below.
0.29 0.223 0.31 0.549 0.667 0.814 0.462
Determine the probability of a positive economic trend given an increasing employment. Are employment and economic trend independent?
The CEO of the business has nothing better to do wheras measured the temperatures of 26 department managers 1 to 4 times every day to get a total of 123 measurements.
Eighteen first interviews are usually scheduled per day. What is the probability that the average length of time for the eighteen interviews will be 40 minutes or longer?
At the .05 significance level, is there a difference in the proportion of viewers watching the three channels?
At.05 significance level, can we conclude that larger proportion of the agents think the economy is expanding this month?
The mean weight of loads of coal placed in train cars by a loading machine is 43.0 tons with a standard deviation of 8.0 tons. Assuming that the weight of loads placed in the train cars by this loader are normally distributed
martindate were tester which can compare two materials in sigle run, weights losses from seven runs. Examine these data by creating the 90% confidence interval for difference of means. Define your assumption.
A genetic experiment with peas resulted in one sample of offspring that consisted of 438 green peas and 159 yellow peas.
A researcher is testing the effect of a new cold and flu medication on reaction time. A sample of n = 9 students is obtained and each student is given the normal dose of the medicine.
What is the approximate probability that the combined weight of 25 items exceeds 445 ounces? What theorem is useful in answering this question?
The long distance calls made by the employees of a company are normally distributed with a mean of 6.3 minutes and a standard deviation of 2.2 minutes. find the probability that a call
A law student, who want to check a professor's claim that convicted embezzlers spend on average 12.3 months in jail, takes a random sample of 36 such cases from court files.
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