a manufacturing company uses two different machines, a and b, each of which produces a certain item part. the number of defective parts produced by each machine is about 1 percent. suppose two independent random samples, each of size 100, are selected, where one is a sample of parts produced by machine a and the other is a sample of parts produced by machine b. which of the following is true about the sampling distribution of the difference in the sample proportions of defective parts?
get a manufacturing company uses two different machines, a and b, each of which produces a certain item part. the number of defective parts produced by each machine is about 1 percent. suppose two independent random samples, each of size 100, are selected, where one is a sample of parts produced by machine a and the other is a sample of parts produced by machine b. which of the following is true about the sampling distribution of the difference in the sample proportions of defective parts? from EN Bilgi.
CH6
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A summer resort rents rowboats to customers but does not allow more than four people to a boat. Each boat is designed to hold no more than 800 pounds. Suppose the distribution of adult males who rent boats, including their clothes and gear, is normal with a mean of 190 pounds and standard deviation of 10 pounds. If the weights of individual passengers are independent, what is the probability that a group of four adult male passengers will exceed the acceptable weight limit of 800 pounds?
0.023
0.046
0.159
0.317
0.977
Guys, does anyone know the answer?