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1. There are 30 separate candidates for three vice-president positions at a university. Assuming all 30 candidates are qualified to be selected for any one of the three VP positions, how many different ways can the positions be filled?
2. Suppose a high school issues a student identification number (ID) that consists of two letters followed by six digits (zero through nine) to each student. Assuming repetition of letters and digits is allowed, how many unique student ID numbers are possible?
If the population mean is 36, are the serial killers significantly more introverted at the .05 level? Perform the appropriate one-tailed test.
Suppose that an individual stock's return is normally distributed with a mean of 10% and a standard deviation of 8%. What is the probability that the stock's return will be at least 16%?
Conduct a full test, at the 5% level of significance, to establish whether there is a statistically significant difference between the population mean times in the two banks. (Assume that the samples are drawn from populations that are approximately..
Suppose that researchers suspected that the effectiveness of the gastric freezing treatment might depend on whether a patient had recently developed the peptic.
Let's look at Europe. Refer to the previous exercise. Figure 4.10 (page 169) gives a scatterplot of the same data for the 48 European countries in the data set.
Find the probability that a random selected student takes neither foreign language course. (Show work and write the answer in simplest fraction form)
Is this sample sufficient to conclude that the eye spots have a significant influence on the birds behavior? Use a two tail test with alpha =.05. Compute the estimated Cohen's d to measure the size of the treatment.
You are a restaurant manager. You must pick 13 entrees for your menu. There are 11 meat offerings and 7 poultry offerings to choose from. (a) In how many ways can 13 entrees be randomly selected out of the 18 meat and poultry offerings? Show..
Conduct a hypothesis test. Explain your answer - Did the data you obtained provide enough evidence to reject the claim?
There are 24 giraffes in a zoo. There are 6 times as many giraffes as tigers. How any more giraffes are there than tigers
in the milk section of a self-service market there are 150 quarts 100 of which are fresh and 50 of which are a day
imagine that there are 100 different researchers each studying the sleeping habits of college freshmen. each researcher
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