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You wish to see if a new blood pressure medication improves average blood pressure by more than 22.4 points, which is the average improvement on an old medication. Eighteen randomly selected people were given the medication, and their improvements were as follows:
25 27 18 20 29 15 31 33 15 25 26 15 23 29 21 16 29 19
A. What would be the null and alternative hypotheses?
B. What is the test statistic?
C. What is the p-value?
D. What is your conclusion and statement? Use a significance level of .05.
Kris Lee, the owner and manager of the Quality Hardware Store, is reassessing his inventory policy for hammers.
Prior to enlisting Lathum's services, you have assessed the probability of the GNP growing, holding steady, and declining at 0.3, 0.45, and 0.25, respectively.
If the average price of a new home is 145,000 what is the minimum and maximum prices of the houses a contractor will need to build to include the middle 80% of the market.
question in a study on the health and development of a bird species yellow robin two different sites were compared
A television rating agency produces the ratings of television shows by asking a random sample of about 5000 households with TV sets what shows they watch.
Develop a linear regression model for these data and forecast carpet sales if 30 construction permits for new homes are filed.
Students are sometimes confused by the reasons for blocking and for randomization. One method is used to control known sources of variability.
what size sample will be needed to construct a 95 confidence interval on a ballot issue if the estimate must be plusmn
1. What geographical and historical factors have led Singapore to develop such a particular, and highly valued, local form of the English language? 2. Why are the tiny Spratly Islands such a controversial issue in Southeast Asia?
Use your calculator to find the mean and standard deviation for the 9 observations that remain when you leave out the outlier. How does the outlier affect the values of x and s? Is s a resistant measure of spread?
Julia's Jewel Company (JJC) currently has a stock price of $51 per share. If JJC's cost of equity capital (same as discount rate for equity) is 19%
On average, how many donors must be checked to find someone with Type AB blood? What's the probability that there is a Type AB donor among the first 5 people.
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