Assume that a procedure yields a binomial distribution with a trial repeated n times. Use technology to find the  indicated probability.Find P(7) n = 12, x = 7 , p = 0.5

Binomial Probability If a couple plans to have three children, what is the probability that they will all three be girls?

[a] students took the SAT exam in 2012. The distribution of scores in the verbal section of the SAT had a mean µ = [b] and a standard deviation σ = [c]. Let X = a SAT exam verbal section score in 2012. Then X ~ N([b], [c]).   Find the z-score for x= [d]. (Round to 2 decimal places as needed.)  

If Z is a standard normal variable, find the probability. P(Z > 0.59)

A machine which produces a major part for an airplane engine is monitored closely. In the past, 10% of the parts produced are defective. With a 95% confidence, what is the the sample size that needs to be taken if the desired sampling error is 5% or less. Round appropriately.

Suppose X ~ N([a], [b]). What value of x has a z-score of [c]? (Round to 2 decimal places as needed.)  

The scores on a college entrance exam have an approximate normal distribution with mean, µ = 52 points and a standard deviation, σ = 11 points. Find the following using the empirical rule. About 68% of the y values lie between [a1] points and [a2] points.  

For the standard normal (Z) probability distribution, the area to the left of the mean is

Find the mean of the data summarized in the given frequency distribution. The following frequency distribution analyzes the scores on a math test. Scores Number of Students 40-49 2 50-59 4 60-69 6 70-79 15 80-89 5 90-99 3  

Sample data set:10        22        12        18        11        27        10        15The midrange of the above data set is: