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Use the normal distribution and the given sample results to complete the test of the given hypotheses. Assume the results come from a random sample and use a 5% significance level.
Test H0 : p=0.5 vs Ha : p>0.5 using the sample results p^=0.60 with n=75
What is the test statistic?
What is the p-value?
a. There is a 1% chance that the total return on the nine investments is less than what value? b. What is the probability that the investor's total return is between $400,000 and $520,000?
Find the mean and standard deviation for the number of left-handed students in such classes of 25 students.
Which is the estimated or dear proportion of defective cups in the population?
Formulate a statisticla hypothesis appropriate for the conumer groups purpose then calculate the man average miles per gallon. Determine the most appropriate statistical test using 0.05 significnance level.
Name two measures of the center of a distribution, and state the conditions under which each is preferred for describing the typical value of a single data set.
Write the null and alternative hypotheses to test whether the population variance is different from 6.0.
The annual income for 200 recently graduated business graduates is summarised in the frequency distribution which follows.
a) Define the decision variables? How many decision variables are there in total? b) What is the objective function? c) What are the constraints including the sign and type restrictions?
The scale of scores is set separately for each age group and is approximately normal with mean 100 and standard deviation 15.
Suppose that next year the U.S. will be in one of the following economic conditions: Boom, Moderate Growth, Recession, or Depression
A sports psychologist is studying the efficacy of a new public school health program on the number of minutes 10th graders exercise per week.
Assume that waiting times are approximately normally distributed. Construct a 98% confidence interval for the population mean of waiting times.
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