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Question: ESP. Scientists wish to test the mind-reading ability of a person who claims to "have ESP." They use five cards with different and distinctive symbols (square, circle, triangle, line, squiggle). Someone picks a card at random and thinks about the symbol. The "mind reader" must correctly identify which symbol was on the card. If the test consists of 100 trials, how many would this person need to get right in order to convince you that ESP may actually exist? Explain.
question suppose a hypothesis states that the mean is exactly 50. if a random sample of 35 items is taken to test this
Find the median income of all the orders. Calculate mean. median and mode from the following frequency distribution of marks at a test in English.
Correlations. What factor most explains differences in Fuel Efficiency among cars? Below is a correlation matrix exploring that relationship for the car's.
Revisit the Scenario at the beginning of this lesson.- Are the reported margins of error correct?- Interpret the results of these polls in light of the margin of error.
Probability that the flavor will be carried by Appleton or Beacon is 15/16. Determine the probability a flavor is carried by both Appleton and Beacon.
For each of the following problems, assume that the homogeneity of variance assumption has not been met and that you will need to use the adjusted Welch statistic.
A study is conducted to investigate body mass index (BMI) in children living in urban neighborhoods. The following data are collected. 29 26 24 32 30 22 27 28 31. Compute the median.
Poverty in the states. Find the mean percentage of state residents living in poverty from the data in Table. If we removed Mississippi from the data.
Consider a Poisson probability distribution with 2 as the average number of occurrences per time period. Write the appropriate Poisson probability function.
A randomly selected full-grown adult female okapi weighs between 425 and 525 pounds?
What is the probability that exactly three come up heads, if we saw that one came up tails?
We assume that the population is approximately normally distributed. Find the confidence interval: for a confidence level of 95%:
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