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All of the following would be classified as speech disorders EXCEPT:

In a factory, there is a 15% chance that a machine will produce a defective part in a single operation. If each operation is independent, what is the expected number of operations to produce the first defective part?

Assume that you have two fair six sided dice. Determine the probability that rolling a pair of dice and getting doubles and a sum of 8. (doubles:  both dice show the same number)

All of the following increase the width of a confidence interval except:  

On average, 30 minutes TV-shows have 22 minutes of actual program. Let’s assume the probability distribution for number of minutes of actual program is uniformly distributed from a low of 18 minutes to high of 26 minutes.   What is the probability the show will have between 21 minutes and 25 minutes of programming?

A doctor is called to see a sick child. The doctor has prior information that 90% of sick children in that neighborhood have the flu, while the other 10% are sick with measles.   A well-known symptom of measles is a rash.  Assume that the probability of having a rash if one has measles is 95%. However, occasionally children with flu also develop rash, and the probability of having a rash if one has flu is 8%.   Upon examining the child, the doctor finds a rash. What is the probability that the child has measles?

A synthetic fiber has tensile strength is distributed with mean 76 psi and and standard deviation 4 psi. What is the probability that a random sample of eight specimens will have tensile strength that exceeds 78 psi?

Resistors manufactured by a certain company have a mean resistance of 100 ohms and a variance of 64 ohms. What is the probability that the average resistance of a sample of 36 resistors will be between 97 and 102 ohms?

An independent research was made to calculate the mean weight of elder people in Russia. 50 men and women were interviewed for this research. Calculate the sample median, mode, and mean of the data. Explain how these three measures of location describe different features of the data. All values are in kg. (You will use this data set to answer several questions, Once you entered into calculator Do not delete it).   Calculate the Sample Variance.

A sociologist focusing on popular culture and media believes that the average number of hours per week (hrs/week) spent using social media is greater for women than for men. Examining two independent simple random samples of 100 individuals each, the researcher calculates sample standard deviations of 2.3 hrs/week and 2.5 hrs/week for women and men respectively. If the average number of hrs/week spent using social media for the sample of women is 1 hour greater than that for the sample of men, what conclusion can be made from a hypothesis test ?