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10 cartons are taken at random from an automatic filling machine.The mean net weight of the carton is11.8 kg and standard deviation of 0.15kg. Does the sample mean differ significantly from the intended weight of 12kgs?
In order to compare the means of two populations, independent random samples of 484 observations are selected from each population, with the following results:
If a lot is known to contain 10% defective items, find out the probability that lot will be rejected? Accepted?
Select a legitimate sampling strategy and collect at least 30 data points using your created question or topic. Discuss the sampling strategy in sufficient detail so that someone else could repeat your data collection without any difficulties or q..
At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations.
Reading highway signs is not always easy, especially if your vision is imperfect. Vision in general tends to deteriorate with age. Two researchers conducted a study to determine if the distance at which a standard highway sign could be recognized ..
Find out the test statistic s and its two-sided P -value. Do data give good evidence that population mean is not zero?
Find the equation of least -squares line and plot the line on the scatter diagram of part (a)
A box in a certain supply room contains four 40 w light bulbs, five 60-W bulbs, and six 75-W bulbs. If two are randomly selected from the box and at least one of them is found to be rated 75-W.what is the probability that both of them are 40- W bu..
Construct a grouped frequency distribution using six classes.
Find out the area using Normal distribution. As, if Z is a standard normal variable find out the probability that Z lies.
A study of the time spent shopping in a supermar- ket for a market basket of 20 specific items showed an approximately uniform distribution between 20 minutes and 40 minutes. What is the probability that the shopping time will be:
Which one of these statements concerning the creation of frequency tables for integer data is true? The procedure for creating them is the same as that for creating tables for qualitative data.
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