Test whether there is any change in iq after the training

Assignment Help Basic Statistics
Reference no: EM13240281

IQ test was administered to 5 person before and after they are trained. The result are given

below:

Candidates: I II III IV V

IQ before training: 110 120 123 132 125

IQ after training: 120 118 125 136 121

Test whether there is any change in IQ after the training program. (The absolute value of t for 4 degrees of freedom at 1% level for one-tailed and two tailed tests are 3.747 and 4.604 respectively.

What is the optimal order quantity

Top-grade offering a new shipping option. When an order is placed, top-grade will ship one third of the order every week for three weeks instead of at one time. What is the

Typical amount spent per customer

Assume that the standard deviation s is known to be \$5.50. Using a 0.05 level of significance, would we conclude the typical amount spent per customer is more than \$20.00?

Conduct a test for homogeneity

Do men and women select different breakfasts? The breakfasts ordered by randomly selected men and women at a popular breakfast place is shown inTable 11.55. Conduct a test f

Create interval for the true average age of the consumers

The average age in the sample was 22.5 years with a standard deviation of 5 years. Construct a 95% confidence interval for the true average age of the consumers.

Probability of normal distribution problem

Estimate the area under the Normal Distribution from the mean to a z-score of -2.07. Estimate the z-score that corresponds to an area of 0.5557 under the Normal Distribution.

Knowledge about hypothesis testing of mean

System data for a job shop revealed that the average time spent by a job in the shop was approximately n = 5 working days. Construct a statistical test using a level of signif

Evaluating functions-describing function change rates

Evaluate the functions for the values of x given as 1, 2, 4, 8, and 16. Describe the differences in the rate at which each function changes with increasing values of x.

Calculate the mean median and standard deviation

The Excel file contains the data from a 2008 Wall Street Journal survey of chief executive officers from 381 of the largest US public companies. Consider the data set to be