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A preliminary behavioral sutdy of the jingdong black gibbon, a primate endemic to the wuliang mountains in china, found that the mean song bout duration in the wet season is 12.59 mintues with a standard deviation of 5.31 miutes. assuming that song bout is normally distributed, determine the percentage of song bouts that have durations within
a. One standard deviation to either side of the mean
b. Two standard deviations to either side of the mean
c. Three standard deviations to either side of the mean
You obtain the data shown below for 30 girls with anorexia who were treated with psychodynamic therapy. Using the data below and the data above compare the outcomes for CBT and psychodynamic therapy.
the probability distribution of a discrete random variable x is given bypx -1 15 px 0 25 px 1 25 .a. compute
State the decision rule. Compute the pooled estimate of the population varaince. Compute the test statistic
Find the sample mean and sample standard deviation of the amount citizens spend per year. When finding a confidence interval for the true mean spent of ALL citizens, should we use a z-score or a t-score? Why?
How do we use a least squares regression line? What is the range for the coefficient of determination?
De acuerdo con la Agencia Seguros de un Estado, una familia de 4 miembros gasta entre 400 y 3800 dólares anuales en toda clase de seguros. Sunponga que el dinero que se gasta tiene una distribución uniforme.
Use this information to find the upper and lower limits of the first class if you wish to construct a frequency distribution with 10 classes.
Use the sales data given below determine: a) The least square trend line.
Iindicate all samples are approximately Normal with no outliers. Is the ANOVA appropriate?
As reported by Runner's World magazine, the times of the finishers in the New York City 10-km run are normally distributed with a mean of 61 minutes and a standard deviation of 9 minutes. Let x be the finishing time for a finisher in the New York ..
The remaining 5 were not given the overview. Here are the scores for students in each group:
At least 150 individuals will cooperate and respond to the questions? In other words, what is the probability that the sample proportion will be at least 150/400 = .375?
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