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A population consists of the following N=5 scores:
0, 6, 4, 3, and 12
a) Compare μ and σ for the population
b) Find the z-score for each score in the population
c) Transfer the original population into a new population of N=5 scores with a mean of μ=60 and a standard deviation of σ=8
Descriptive statistic results from quarterly sales figures over a 18 year period (73 qtr) are below. Please interpret the standard Deviation and Median in terms of sales results,
Discuss why the standard error for the distribution of sample means is smaller than the standard deviation of sample scores. Distinguish between within-group designs and between-group designs.
Use the value 20 for the population standard deviation of scores on this subsection.
Using a critical value, test hypothesis at the 1% level of significance.
A sample of 64 Atlanta consumers showed a mean quarterly water bill of $51 with a sample standard deviation of $12. At α = .05, does the Atlanta sample support the conclusion that above-average rates exist for this private water system?
Here are the shopping times (in minutes) for a sample of shoppers at a particular shoe store: 25, 38, 34, 41, 37 and find the standard deviation of this sample of shopping times. Round your answer to at least two decimal places.
Describe the data appear the strength of the relationship among variables is sufficient to warrant using linear regression forecasting.
There are 4000 mangoes in a shipment. It is found that it a mean weight of 15 ounces with a standard deviation of 2 ounces.
Use regression analysis to develop an estimated regression equation that could be used to predict the value score given the price of the car.
The table below lists the number of audience impressions (in hundreds of millions) listening to songs and the corresponding numbers of albums sold (in hundreds of thousands).
Find a 99% confidence interval for the population mean number of weekly miles.
The assembly time for a product is uniformly distributed between 6 to 10 minutes. The probability of assembling the product between 7 to 9 minutes is
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