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Assuming IQ scores have mean 100 and standard deviation 15, if we randomly sample 225 people's scores, the probability of their sample mean IQ being less than 99 is 0.16, and the probability of being greater than 101 is also 0.16. What is the probability of the sample mean being more than 1 point away from 100?
1 suppose xberp and yber q with 0ltplt1 0ltqlt1 and let x y be independent. determine the pmf for xy.2 suppose we have
a company manufactures 13 types of cars. prior to full-scale production 4 of each type are made and a sample of 5 cars
Explain the conclusion that there were no statistically significant differences (p ≥ 0.05) between the benefits of behavioral therapy and psychoanalysis when treating an eating disorder.
Define a game and prepare the odds of winning. The game could be a card game with two cards or a dice game. Use MS-Excel (if possible) to solve this problem
Plot the time series and find a three-years moving average to the data and plot the results - Compute a linear trend forecasting equation and plot the trend line.
P-value. A medical researcher tested a new treatment for poison ivy against the traditional ointment. He concluded that the new treatment is more effective.
Provide an example of a couple of variables that we work with that could meet the binomial criteria above.
Grades. Two different professors teach an introductory Statistics course. The table shows the distribution of final grades they reported.
When you calculate CIs for time on task, I notice that you use the critical value from the t-distribution (TINV(0.05, degrees_of_freedom))
an exclusive club for top students has to elect a new president and treasure. there are 50 students in the club and all
Several companies have been developing electronic guidance systems for cars.- Is there evidence to conclude that the Motorola electronic guidance system is superior to that of the German competitor?
Graph this probability versus n for n equal to multiples of 50 up to 1000. - Discuss the behavior of this function and why it behaves as it does.
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