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The student newspaper called Campus Press polled a simple random sample of 280 undergraduate students in order to study student attitude toward a proposed change in dormitory regulations. Students responded as either support, oppose, or neutral with regards to the issue. The numbers are displayed in the table below: Student attitude Support 158 Neutral 73 Oppose49 Total 280 Suppose that the Campus Press suspects that half of the students support the change in regulations, and 20% of them oppose (leaving 30% to be neutral). 1. What would be the null hypothesis for a chi-square test based on this suspicion? 2. Under the null hypothesis, what is the value of the expected count for students who oppose the proposed change in dormitory regulations? 3. What is the chi squared statistic?
discovering statistics referring to the information from my first question as stated nielson media research reported
the increased numner of small commuter planes in major airports has heightened concern over air safety. an eastern
Is your sample of MSU students significantly different from the population of MSU students in terms of the number of classes they take per semester (use alpha level .05)? To answer this question, follow all of your steps for hypothesis testing.
A psychiatrist would like to determine whether a new medication has any effect on psychotic symptoms. A sample of patients is assessed and then placed on drug therapy for 2 weeks. The severity of their symptoms is assessed again at the end of the tre..
set up a hypothesis test for a scenario of your choice. you can use a scenario from your own experience or invent
A researcher used stepwise regression to create regression models to predict Birthrate (births per 1000) using five predictors:
Carry out the test for the variance of girls score is not significantly less than the given data.
gerald needs to purchase baseballs and bats for his youth baseball league. he will need at least 25 pieces of equipment
A researcher collected sample data for 17 women ages 18 to 24 . The sample had a mean serum cholesterol level (measured in mg/100 mL) of 188.8 , with a standard deviation of 5.5.
What is the probability that between 10:00 and 10:30 the switchboard will receive more than 9 calls but fewer than 15 calls?
if the mean value of a set of data including 6 sample tests is 20 and the standard deviation of the data is 5 what is
A state meat inspector in Iowa has been given the assignment of estimating the mean net weight of packages of ground chuck labeled "3 pounds." Of course, he realizes that the weights cannot be precisely 3 pounds.
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