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The average electric bill in a residential area is 72 dollars for the month of April. The Standard deviation is 6 dollars. If the amounts of the electric bills are normally distributed, find the probability that the mean of the bill for 15 residents will be less than 75 dollars.
Also find information about blood donations and the percentage of each type donated. How do the charts compare? Why is the collection of type O blood so important?
You roll two fair dice, one red and one green. What is the probability of getting a number less than 5 on both?
A membership drive in a metropolitan area resulted in 500 new members. What is the probability that 175 or more of the new members are significantly overweight?
Compute the expected value of perfect information. Do you think it would be worth trying to obtain additional information concerning which scenario is likely to occur?
Find out the expected shape of distribution of sample mean?
Multiple choice questions based on F-distribution.
What are the differences between a two sample t-test and ANOVA hypothesis testing? What is an example of a research idea that would need to be analyzed using an ANOVA?
Prediction interval for the regression line - Using the age and sick days data from table below, find the 98% prediction interval when x = 47 years.
What types of variables are measured using Pearson coefficient, and what types variables are measured with chi square; I am looking for names of variables (e.g., nominal, interval)?
Distances from the past year and carry out a hypothesis test for its suspicion. State the null hypothesis and the alternative hypothesis that it would use for this test.
A researcher computes the mean, the median, and the mode for a set of n = 50 responses to this question. Which of the following statements accurately describes the measures of central tendency?
Locate the results of a recent survey in a newspaper, magazine, or Internet article. Outline the survey data so that your peers can understand the variables and results, and then identify at least one key formula from this Module that you could us..
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