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Question: Assuming a two-tailed test with α = .05, how large a correlation is needed to be statistically significant for each of the following samples?
a. A sample of n = 10
b. A sample of n = 20
c. A sample of n = 30
d. A sample of n = 40
In this the anniversary of the sinking of the Titanic, it is interesting to look at the distribution of those who survived, and those who died. The table below describes the number of men, women and children who were passengers on the Titanic.
Let's suppose that we have 2 variables year and age.. I use STATA to make them into dummy variables as follows:
If she actually has 55% of the total vote, what is the probability of getting a sample proportion this small or smaller? Do you think she actually has 55% of the vote? Why or why not?
What is meant by an independent sample? What is a related sample? When should researchers use different hypothesis tests for independent and related samples?
Determine probability that number of boats constructed next month will be between 4 and 7 (both inclusive).
If we were to ask three people at arbitrary, determine the probability that they will all prefer punk rock?
The heights in inches of 18 randomly selected adult males in LA are listed as: 70, 69, 72, 57, 70, 66, 69, 73, 80, 68, 71, 68, 72, 67, 58, 74, 81, 72. Display the data in a stem-and-leaf plot.
Suppose the budget has the support of 53% of voters. What is the probability that the newspaper's sample will lead it to predict defeat? The probability is...........round to 2dp.
Construct a 99% confidence interval on the population mean height of all 1-year-old pine seedlings. What are the confidence limits? What statement can be made about the population mean height using the confidence interval?
To test the effectiveness of a new studying strategy, a teacher randomly divides a sample of 8 students into tow groups, with n = 4 in each group.
She believes that the number of customers served on weekdays follows a normal distribution. Construct an 99% confidence interval of the average number of customers served on weekdays.
julias food boothjulia robertson is a senior at tech and shes investigating different ways to finance her final year at
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