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Lisa has collected data to find that the number of pages per book on a book shelf has a normal distribution. What is the probability that a randomly selected book has fewer than 169 pages if the mean is 195 pages and the standard deviation is 26 pages? Use the empirical rule.Enter your answer as a percent rounded to two decimal places if necessary.
Create parallel boxplots comparing the scores of boys and girls as best you can from the information given.- Write a brief report on these results. Be sure to discuss the shape, center, and spread of the scores.
given the linear correlation coefficient r and the sample size n determine the critical values of r and use your
How many different samples of this size can be selected from this population of 18 patients using theoretical sampling and experimental sampling?
katherine dann is planning to finance her college education by selling programs at the football games for state
How does a researcher determine the meaning of a score on a norm-referenced test such as an IQ test? Why are raw scores transformed to standardized scores, such as z-scores, in order to interpret those raw scores?
In a survey of 6000 high school students, 3230 read books during the summer break. Using these sample statistics, find a 99% confidence interval for the proportion p of all high school students that read books during the summer break.
How many students weigh less than 128 pounds? b) how many students weigh more than 165 pounds? c)how many students weigh between 135 and 165 pounds?
The coefficient of determination of a set of data points is 0.766 and the slope of the regression line is negative 4.28.
Two airlines fly to Memphis. according to airport data for the past year, wings airlines planes arrived on time 330 times and were late 60 times. Global airlines planes arrived on time 430 times and were late 50 times.
Using this test 80% of Down's syndrome cases can be identified at birth, while 5% of normals are detected as positive. a. What is the sensitivity and specificity of the test?
q1 if light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500
for a certain type of electronic component the lifetime x in thousands of hours has an exponential distribution with
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