Question #1 / 5
Let be a standard normal random variable. Use the calculator provided to determine the value of such that .
Carry your intermediate computations to at least four decimal places. Round your answer to at least two decimal places.

Question #2 / 5
Suppose that the heights of adult women in the United States are normally distributed with a mean of inches and a standard deviation of inches. Jennifer is taller than of the population of U.S. women. How tall (in inches) is Jennifer? Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.

Question #3 / 5
According to a recent survey, the salaries of assistant professors have a mean of $ and a standard deviation of $ . Assuming that the salaries of assistant professors follow a normal distribution, find the proportion of assistant professors who earn less than $ . Round your answer to at least four decimal places.

Question #4/ 5
Use the calculator provided to solve the following problems.
â?¢ Consider a t distribution with degrees of freedom. Compute . Round your answer to at least three decimal places.
â?¢ Consider a t distribution with degrees of freedom. Find the value of such that . Round your answer to at least three decimal places.

The solution provides step by step method for the calculation of probability using the Z score and t distribution. Formula for the calculation and Interpretations of the results are also included.

... score for the standard normal distribution where Area ... of questions on some distributions: normal, t and binomial ... randomly selected, find the probability that her ...

... a random sample of bottles is selected, what is the probability that the ... with a mean of $50.50 b. A standard normal distribution c. A t distribution with 15 ...

...Normal Probability Distribution. ... b) Compute the value of the test statistic Test Statistic used is t = (Xu)/(S/sqrt(n)). Given that = 14.2, n = 25, s = 5 ...

Probabilities and Normal Distributions. ... of all probabilities in any discrete probability distribution is not ... exactly one, since some of the probabilities may be ...

... A normal distribution curve is a good way to display ... the life times of the bulbs, we can estimate probabilities. For example, the probability that T assumes a ...

... If the probability distribution is not known, we cannot calculate probability. Uses Excel for calculating probabilities in a Normal Distribution. ...

... years, Joe derived the following set of probabilities: ...t = +2.132 c)n = 18; t = +2.898. ... Answers questions on normal distribution, probability, confidence levels ...

... Suggested answer: Student t distribution since the population ... selected, find the probability that the ... P (Z < -1.8842) = 0.0298 Details Normal Probabilities. ...