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Find the test statistic and do the two-sample test for equality of proportions. Is the decision close?
a. Repeat buyers at two car dealerships: p1 = .30, n1 = 50, p2 = .54, n2 = 50, a = .01, left tailed test.
b. Honor roll students in two sororities: p1 = .45, n1 = 80, p2 = .25, n2 = 48, a = .10, two tailed test.
c. First-time Hawaii visitors at two hotels: p1 = .20, n1 = 80, p2 = .32, n2 = 75, a = .05, left tailed test.
The average selling price of homes in a certain city is $372,200. Assume the variable is normally distributed with a standard deviation of $37,200. If 437 homes are for sale, how many homes will sell for more than $349,880?
What is the median processing time at the station?
Examine the skewness and kurtosis values for each dependent variable, examining the histograms and examine the Shapiro-Wilks' results and What is the outcome of the multivariate tests
advertising for this variable each student must fill in the table with whatever random values each student wants.
A product is made up of two subsystems in parallel. Subsystem one consists of ten elements in series with a failure rate if 1/100. The second subsystem consists of 5 elements in series with a failure rate of 1/200. What is the overall reliabili..
question 1nbsp calculating a z-score and graphing a box plotnbsplook at the data under dietarysupp.nbsp the table gives
List and explain the variables you would collect in this study. There must be a minimum of three variables and two must meet the assumptions for a correlational analysis.
Observed Treatment Success
first save this file to your computer. answer each of the following questions then resave the file along with your
Calculate the sample size needed given these factors
A clinical trial is conducted comparing a new pain medication for arthritis. Participants are randomly assigned to receive the new medication or a placebo. The outcome is pain relief within 30 minutes.
Characteristics on patients participating in a clinical trial.
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