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The Gordon S Black Corporation surveyed 439 working parents: 320 of those surveyed said that one parent would stay at home if money were not a factor(Democrat and Chronicle, November 28, 1988). Is there sufficient evidence to conclude that p, the population proportion who would stay at home, is greater than 0.70? Use a=0.02.
a) What are the Ho and HA?
b) What is the p-value?
c) State the conclusion in context of this problem.
beverly mills has decided to lease a hybrid car to save on gasoline expenses and to do her part to help keep the
A certain health spa claims its clients have BMI between 23.5 and 24. Suppose eight health spa clients are selected at random. What is the probability that the sample mean will be in this interval?
The weights of canned hams processed at Henline Ham Company follow the normal distribution, with a mean of 9.20 pounds and a standard deviation of .25 pounds. The label weight is given as 9.00 pounds
How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation?
Examples of correlated variables. Give an example of two variables in your field of study that are- positively correlated- negatively correlated.
(i) S ketch the distribution function. (ii) Is the distribution function continuous? If so, give a formula for its probability density function.
In the case of the following problems in all cases of exponential distribution probability calculation is the 1-e utilized.
In Excel use the Descriptive Statistics and comment on the mean, the skewness, the standard deviation and kurtosis.
Suppose that in Example 1 the manufacturer of the new medication feels that the odds are 4 to 1 that with this medication the recovery rate from the disease is 0.90 rather than 0.60. With these odds, what are the probabilities that he will make a..
in a sample of 47 adults selected randomly from one town it is found that 9 of them have been exposed to a particular
The following two samples represent independent random samples. Calculate the value of the test statistic W.
eBay selling prices: For eBay auctions of the iPad2 64GB 3G Wi-Fi units, a sample was taken in July 2011 where the Buy-it-Now prices were (in dollars): Find the standard deviation of the data and the standard error of the sample mean, Interpret
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