Hypothesis test of a difference of means
For a hypothesis test of a difference of means with n1=35 and n2=45, what is the value for the degrees of freedom, df?
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Determine the mean and standard deviation of the variable x in the binomial distribution where n= 4 and ? = .80
A UCLA researcher claims that the life span of mice can be extended by as much as 25% when the calories in their food are reduced by approximately 40% from the time they are weaned.
A sample of pieces is taken and the diameters are 1.01, 0.97, 1.03, 1.04, 0.99, 0.98, 0.99, 1.01, and 1.03 centimeters. Find a 99% confidence interval for the mean diameter of pieces from this machine, assuming an approximate normal distribution.
We estimate the mean price of a cell phone in the Bay Area using a 95% level of confidence. From a random sample of 25 stores the mean price was found to be $150 with a standard deviation of $15
For a two tailed hypothesis test of a difference of means with α=.05 and df=30, we have the following critical values:
Construct a 98% Confidence Interval for the difference of the proportion between the drug group and the placebo group. Using a significance level of .01, test the claim that the drug is effective using a hypothesis test of the difference of the pr
State two ways in which the standard normal distribution and the Student's t-distribution are alike. State two ways in which the standard normal distribution and the Student's t-distribution are different.
In a survey, 600 mothers and fathers were asked about the importance of sports for boys and girls. Of the parents interviewed, 70% said the genders are equal and should have equal opportunities to participate in sports.
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Explain the risks of not reporting the results of your forensic assessment findings accurately. Provide specific examples.
Read "The Effect of Tart Cherry Juice Compared to a Sports Drink and Cycling Exercise Performance, Substrate Metabolism, and Recovery" from University Library
Identify and analyze one resource that provides information regarding services for dealing with and treating substance use and abuse in youth or adolescence.
Discuss how culture may influence one's perceptions. Provide an example of how culture may impact the interaction between a patient/client
Write an essay describing your achievement of a goal and your friends or family member's achievement of a goal using motivational theory
Pets can have a therapeutic effect on people; they seem to have the power to calm the anxious and cheer the depressed. Give three reasons
Review Chapter 12 and consider how your culture has impacted your worldview and personality. Pay particular attention to the section on characteristics of Cult