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A medical school claims that more than 28% of its students plan to go into general practice. It is found that among a random smaple of 130 of the school's students, 32% of them plan to go into general practice. Find the P-value for a test of the school's claim.
Find the z-score for a car driving 20 mph in this construction zone. It is an outlier (assume the data is bell shaped, so dont actually test it with pearsons index).
If the population standard deviation is σ = 20 is the 6 point effect large enough to be statistically significant? Use the two - tailed test with α = .05
26% of college students say they use credit card because of the rewards program . You randomly select 10 college students and ask each to name the reason he or she uses credit cards.
Four different types of fertilizers are used on raspberry plants. The number of raspberries on each randomly selected plaint is given below.
A monthly budget of $100,000 is available for both advertising and purchase of the fragrances. Develop and solve a linear optimization model to determine how much of each type of perfume should be produced to maximize the net profit.
The total population of car passengers involved in traffic accidents are classified into six categories: two factors (one with 2 levels and one with 3 levels) crossed.
Find the probability that a randomly selected employee earns less than $5.43.
Researchers at Pharm-X, a pharmaceutical company, are testing and comparing the effects of Drug A and Drug B on participants' allergies. The researchers are using a double-blind procedure to conduct their test.
Professor wishes to determine whether prior statistical knowledge assists students in their performance on the final exam. What is the relationship between pretest scores and final exam scores after controlling for cumulative GPA. What SPSS test w..
Suppose a simple random sample of 20 non-English student have an average math score on the SAT exam of 528. What are the appropriate hypotheses?
A professor asked her sophomore students, "How many drinks do you typically have per session? (A drink is defined as one 12oz beer, one 4oz glass of wine, or one 1oz shot of liquor.)"
Compute z values for each and comment on your findings.
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