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Q1) Enterprising art historian just started new business: the production of walking tour audiotapes for use by those visiting major cities. She initially produced tapes for eight cities: paris , Rome. London, Florence, Jerusalem, Washington, New York, new haven. A test was performed to find out whether all 8 tapes (featuring various aspects of different cities) were evenly appealing to potential users. A random sample of 60 prospective tourists was chosen, 20 per city. Each person estimated tape he or she was given on the scales of 0 to 100. Results were analyzed using one -way ANOVA and included SSTR =7 , 102 and SSE = 10 ,511. Are all 8 tapes equally appealing on average? Determine p value?
Find the probability of failure of system for any 4 hours of operation?
The sample size n, the sample means, and the sample standard deviations for the two groups are given
A company makes molded plastic toys. They study the plastic injection process into the molds. A common cause of variation and What are the control limits for an chart
What is the probability that there will be more than three trucks either being loaded or waiting?
The number of passengers on the Carnival Sensation during one-week cruises in the Caribbean follows the normal distribution.
What percentage of the averages or medians of the sample will be greater than 140 seconds?
The conservative degrees of freedom for the t distribution are and The standard error, conservative degrees of freedom
A faculty group wants to determine whether job rating (x) is a useful linear predictor of raise (y). Consequently, the group considered the linear regression model:
A sample of 100 observations has a mean of 2.99 and a standard deviation s equal to 0.5 Conduct the following test of hypotheses about the corresponding population mean at a level of significance of α = 0.2
I have fit a line to data representing cholesterol readings for 28 individuals starting a cholesterol reducing drug. The computer provides the following output, The degrees of freedom for the t test for the slope are
For the data giben below, prepare a R-chart. Note that the sample size is three.
Find the probability of winning jackpot?
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