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Find the 95% confidence interval for the population mean.
A manufacturer of potato crisps adds prize at a rate of one prize for every 20 packets in a campaign to promote its product. A packet cannot contain more than one prize. If the packets are sold in multi-packs containing six packets, what is the distribution of the number of prizes in a randomly chosen multi-pack?
What is the value of the population mean? What is the best estimate of this value?
Find the value of k that makes f(x; y) a valid probability distribution.
Determine the mean and standard deviation of the data. What percentage of the data lies within one standard deviation of the mean value?
What is the probability of receiving more than three pieces of junk mail today?
What is the null hypothesis? Use α =0.05. Compute critical value. Use α =0.05.
Construct the following confidence intervals for your data set:
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
Now assume institutional cache is used. Hit rate for cache is 0.6. Determine the total average response time.
Data is given in the table below. Process data as illustrate in the paper on the Mann-Whitney U test. Critical Value:Test Statistic (Show procedure.)Z .
At a 5% level of significance, is there enough evidence from this survey to conclude that more than half of all adults would rather have $100 than a day off?
Estimate a test statistic for null hypothesis H0: μ = 30 against two-sided alternative hypothesis H1 : μ ≠ 30, and by plotting this on its reference distribution.
You will investigate four different scenarios of population growth also decline in this town. Graph the model as well as investigate it by four different growth models.
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