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1. A shipment of 50 mechanical devices consists of 42 good ones and eight defective. An inspector selects five devices at random without replacement. What is the probability that at most four are good? Hint: Use the compliment rule when solving this problem to make it a lot easier.
2. Suppose that the number of times a high school student says "like" in a sentence is approximately normally distributed with a mean of 4 and a standard deviation of .5.
a. What percentage of high schoolers say "like" in a sentence more than 5 times?
b. For high schoolers, what is the 86th percentile for the number of times that "like" is said in a sentence?
3. Suppose that 60% of employees at a particular corporation participate in the optional retirement plan. If a random sample of 50 employees is selected, what is the probability that at least 25 employees in the sample will participate in the optional retirement plan? (Use the normal distribution as an approximation and make the continuity correction.
On a rainy day each of the components independently functions with probability p1, whereas on a dry day they each independently function with probability p2. If the probability of rain tomorrow is α, what is the probability that the satellite will..
given a normal population whose mean is 50 and whose standard deviation is 10. find the probability that a random
As discussed in Section 4.3, the algorithm in Figure 4.4 could use left or right-recursion to transform a repeated sequence of symbols into standard grammar form.
a city council consists of 7 males and 4 females. two councilors are selected at random to represent the city. what is
A study in pediatric emergency care compared the injury severity between younger and older children.
Create a frequency distribution table for your data. You can use Excel or Word. Calculate the standard deviation. Calculate the variance.
Monte Carlo sampling makes the assumption that all parameters of an alternative are: A. Independent B. Dependent C. Equal to 1.0 D. Probability distribution
in a study to determine the success rate of premed students at uta it was found that 40 of premed students ultimately
Sales of a product are influenced by the salesperson's level of education and gender, as well as consumer income, ethnicity, and wealth.
families usa a monthly magazine that discusses issues related to health and health costs surveyed 20 of its
Use the following frequency distribution to determine the midpoint of the second class.
In a school how is ztest used in time table ... one group that studies 7 periods a day of 45 mins each class and the other group can choose semester wise classes and their time period is 90 mins
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