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A newly married couple plans to have four children. Assume that boys and girls are equally likely each time the child is born. Determine the probability couple will have no more than 2 boys?
Your company has experienced problems with employee morale and productivity. The consultant that was hired submits a report that includes opinions and data collected from 300 secretaries and clerks as well as 75 senior managers.
Trying to come up with the conditional probability for a problem that deals with court cases and number of appeals and reversals for a particular judge.
What are the Chi-square results? What are the expected and the observed results that were found? Are they results of the Chi-Square significant? What do the results mean?
The largest value in a set of data is 160, and the smallest value is 70. If the resulting frequency distribution is to have six classes of equal width, what will be the class interval?
Find the 95% confidence interval for the true population mean. Identify the point estimate for mean and margin of error.
Can you provide another explanation for this one: Zc/Tc for 86% confidence interval when the sample size 50?
Graph the information using a histogram and a scatter plot in Excel as well. How does seeing the information in a graphical format provide more information?
To test the effectiveness of a new studying strategy, a teacher randomly divides a sample of 8 students into tow groups, with n = 4 in each group.
If sample mean is M=44. Is this sufficient to demonstrate significant effect? Again assume a Two-tailed test with a=0.05.
Find a 98% confidence interval for the mean number of days required for successful completion of physical therapy for patients in the average group. Discuss the results.
The number of students that enroll in a psychology course is a poisson random variable with mean 100.the course incharge has decided that if the enrolling is 120 or more he will teach the course in two separate sections.
Find out the area using Normal distribution. As, if Z is a standard normal variable find out the probability that Z lies.
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