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Identify the type of sampling (random, systematic, convenience, stratified, cluster) used when a sample of people who smoke is obtained as described below.
a) A complete list of all smokers is somehow compiled and every 1000th name is selected
b) At the next New York City marathon, a survey is conducted of all runners.
c) Fifty different grocery store owners are randomly selected, and all of their customers are surveyed.
d) A computer file of all smokers is compiled and they are all numbered consecutively, then a random numbers generated by computer are used to select a sample of 1000 smokers.
e) All of the smokers' zip codes are collected, and 5 smokers are randomly selected from each zip code.
Give an example of a hypothesis test you could perform at work or at home. State what the Null and the Alternative hypotheses would be in your test.
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Find out the probbility that exactly five arrive within two days?
To select a _________ sample, an intact group of subjects that represent the population is selected.
Then use ogive to estimate median and first and third quartiles. Also utilize it to reply following question: What percent of 60 mutual fund loads are less than 75.
Findout the value of X using normal distribution which gives standard deviation also mean. A math teacher gives two different tests to measure students' aptitude for math.
According to a hospital administrator, historical records over the past 10 years have shown that 20 percent of major surgery patients are dissatisfied with after-surgery care in the hospital. A scientific poll based on 400 hospital patients has ju..
Draw a scatter diagram and consider the correlation for the provided data. Do larger universities tend to have more property crime.
Use the list of random digits below to assign 4 men and 2 women to the shark fin treatment. Read the table from left to right, first selecting the 4 men and then the 2 women. Use the numerical labels given in the chart to the names.
Compute the mean and standard deviation of the scores and use these for the calculations below. Show your calculations on the back of his page.
Determine margin of error for confidence interval in (a)?
Which sessions, morning or afternoon, had more stable or uniform attendance over three-day period? Describe by using the suitable calculation for each data set and compare two calculations .
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