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Using Probability Distribution in Research simulation located on your student website. During the third cycle of the simulation, you need to make a decision about buying machinery. The stakeholders in the simulation have different opinions as to the proper course of action the organization should take.
Assume the population proportion is p = .25. What is the probability that the sample proportion will be within +/- .03 of the population proportion if a sample of size 1,000 is selected (to 4 decimals)?
At the .05 significance level, can she conclude that there is a difference in the mean amount of weight loss among the three diets?
In the survey of 8000 women, 5431 say they change their nail polish once the week. Create the 99% confidence interval for population proportion of women who change their nail polish once a week.
Convert the height of the stack of pennies into meters. Calculate how many pennies would be needed to make a tower 1 billion meters tall. Give answer in both standard calculation and in scientific notation.
Describe the purpose of transforming raw scores into standard scores. Describe what "normal distribution" means.
Five cards are drawn from an ordinary deck without replacement. Find the probability of getting:
A company selects five of the machines at random, thinking all are in working condition. What is the probability that all five of the machines are nondefective?
A population is normally distributed with the mean of 100 and a standard deviation of Would it be unusual for mean of sample of 3 to be 115 or more? Why or why not?
A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO is less than 1 in every one thousand. State the null hypothesis and the alternative hypothesis for a test of significance.
A function sometimes associated with a continuous nonnegative random variable is the failure rate (or hazard rate) function which is defined as:
The cost of an e-commerce website can vary a great deal. A market research team hypothesized that the cost of an average website is $3500.
Find the probability of drawing either a king or a spade in a single draw from a pack of 52 playing cards.
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