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The population of SAT scores forms a normal distribution with a mean of μ = 500 and a standard deviation of σ = 100. If the average SAT scores is calculated for a sample of n = 25 students,
a. What is the probability that the sample mean will be greater than M = 510. In symbols, what is p (M>510)?
b. What is the probability that the sample mean will be greater than M = 520. In symbols, what is p (M>520)?
c. What is the probability that the sample mean will be between M = 510 and M = 520? In symbols, what is P (510 < M < 520)?
Is it necessary to assume a normal distribution on the population to estimate the value of the mean spending per day? Explain.
The mean maximum oxygen uptake for elite athletes has been found to be 80 with a standard deviation of 8.1. Assume that the distribution is approximately normal.
Any value which is based on having measured a sample is called:
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Draw a simulation experiment for car agency and simulate using fleet of four rental cars for 10 days.
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?
A researcher has a series of Likert-scale items and a measure of frequency of absenteeism. He uses each of the Likert-scaled items in a separate bivariate correlation with absenteeism without testing for the assumptions of linear relationships. Is th..
The hypotheses tested by the one-way ANOVA F test - Evaluate the P-value of the ANOVA F test
Construct an appropriate control chart and comment on the process.
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