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From a study of the amounts of Coke in 12-ounce cans the researchers found that $n=36$, $bar{x}=12.19$, and $s=0.11$. Test the claim that the actual amount of coke exceeds 12 ounces. (Note: You can use the value of $s$ as the value of $sigma$ for your hypothesis test).
Which of the following statements is not true of the null hypothesis? A) It is your theory B) It is what you would expect by chance alone C) Assumes things to be equal D) None of the above
Report descriptive statistics, assumptions tests, effect sizes (partial eta) as well as tests of statistical significance.
30% student take only Chinese, 30 % student take only Maths. It is found that both male n female has the equal chance to wear spectacles. Draw a tree diagram.
Construct a 99% confidence interval for the difference in the probabilities of getting a fracture for non-cola drinking and cola drinking kids.
After treatment is administered to individuals in sample, sample mean is found to be M = 55. Determine Cohen's d measure effect size for both tests (σ = 20 and σ = 10).
Create a 90% confidence interval for mean score on this placement exam for all students.
High School GPA is normally distributed with a mean of 3.06 and a standard deviation of 0.40. The probability of a randomly chosen student having a HS GPA between 3.54 and 3.80 is
Suppose a new weight loss program was sponsored by the local health and fitness club in a small town. The program claims to make people lose more than five pounds in a month. Twelve participants were selected and their weights were recorded.
Explain how many cars would required to go by the speed trap to be 99.8% sure which at least one driver will warm oncoming traffic of the speed trap.
If 28% of the residents play poker and garden and 70% of the residents play both shuffleboard and poker, then find the probability that a resident plays poker, given that they garden.
To find the equation of the line of the best fit
Use formula z=(mean of values in sample - mu subscript mean of values in sample) divided by (lower case sigma divided by sqrt number of values in sample)
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