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Scores by women on the SAT-I test are normally distributed with a mean score of 998 and a standard deviation of 202. scores by women on the ACT test are normally distributed with a mean of 20.9 and a standard deviation of 4.6 assume the two tests use different scales to measure the same aptitude. If a woman gets a SAT score of 1220, what is her equivalent ACT score?
Show draw a cause-and-effect diagram to organize the possible causes of delayed flight departures into the following maj categories.
At the 0.10 level of significance, is the coin biased toward heads? Show your decision rule and calculations.
Create a histogram over five class intervals.
Find a 95% confidence interval for the population mean selling price of all homes in this neighborhood.
Evaluate percentage of households in town with one or more cars; attach standard error to be evaluate. If this is no possible, describe why not.
Create a 95% confidence interval for true mean.
The numbers of years served by selected past members of the U.S. Supreme Court is listed below. Find the percentile rank for each value. Which value corresponds to the 40th percentile? Construct a boxplot for the data and comment on their shape.
Use this sample information to develop a 99% confidence interval for the population proportion of women who wear flats to work.
An accounting firm has recently recruited six graduates: three men and three women. Three of the graduates are to be selected at random to work in the firms suburban office. Construct a probability tree.
Suppose that 40% of participants consume caffeine and smoke. if 8 participants are evaluated, what is the probability that: a) Exactly half of them consume caffeine and smoke?
It is a striking fact that the first digits of numbers in legitimate records often follow a distribution known as Benford's Law, shown below.
How could the engineer increase the accuracy of the interval without changing the level of confidence?
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