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After 6 quizzes you have a mean score of 50(out of a possible 70). If 60 on next quiz what new mean?
What is the maximun mean score that you could have after the next quiz? What is the minimum mean score that you could have afterthe next quiz?
A leasing firm claims that the mean number of miles driven annually,u , in its leased cars is less than 13500 miles. A random sample of 70 cars leased from this firm had a mean of 13207 annual miles driven.
assume that the readings at freezing on a batch of thermometers are normally distributed with mean 0degc and standard
For a population with a mean of (u)=50 and a standard deviation of (o)=10, how much error on average would you expect between the sample mean (M) and the population mean for the following samples
Construct a frequency distribution and construct a histogram for the following data and use seven intervals, starting with 30-39.
Verify the computer"s calculations by checking the interval given for the first sample against your result in (b). Use the x reported by the software. (d) How many of the 25 confidence intervals contain the true mean = 460?
How large a sample is needed to find the population mean within $250 at 99 percent confidence?
Suppose a one tailed t test is being applied to find out if the population mean is less than $120. The level of significance selected is 0.01 and 26 bank accounts were sampled.
What are the assumptions regarding an ANOVA test and what Excel aid would you use to perform the test, Data Analysis or MacDoIt? What are the assumptions regarding a Chi-square test?
assignment-f 7.357r .83 df 4df 3203df 98 p gt .05 p lt .05 p lt .01question 1. what statistical
Why is population shape of concern when estimating a mean? What does sample size have to do with it?
Some of these items are not up to quality specifications and have to be thrown out. At this rate, how many mistakes can be made while maintaining an acceptable success rate?
Particular brand that they buy. A retailer has ordered a consignment of 5000 such lamps for its chain store nationwide. What is the probability that, the number of defective lamps will be 500 or less?
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