Mathematics, 07.03.2020 05:40 kemellgwilson
Conveyor Belt Motors (20 points) The brushes in the motors that control the conveyor belts at Delectable Delights need to be replaced periodically. Since there are many conveyor belts through the buildings, a supply of brushes is always kept on hand. The brushes come in shipments of 1000 from a supplier who claims that no more than 2% will be defective. Out of each shipment, a random sample of 10 brushes is selected for testing. If there are any defective brushes in the sample, the shipment will be rejected. Let X be the number of defective brushes in a sample of size 10. (a) Could the random variable X be considered a Binomial random variable? Justify your answer using the properties of a Binomial random variable from page 88 in the lecture guide. (5 points) (b) Regardless of your answer in part (a), assume that X is a Binomial random variable. Write out the sample space for X. What are the values of the parameters n and p? (5 points) (c) Calculate the mean and standard deviation for X. Show your calculations and round your answers to two decimal places if necessary. (5 points) (d) Calculate the probability that a shipment will be rejected. Show your work by substituting values into the appropriate formula. Include probability notation in your answer. (5 points)
Answers: 3
Mathematics, 21.06.2019 19:30
Are triangles the congruent? write the congruency statement.what is the congruency that proves they are congruent? what is the perimeter of ∆pqr?
Answers: 1
Mathematics, 22.06.2019 00:00
Maci and i are making a small kite. two sides are 10". two sides are 5". the shorter diagonal is 6". round all your answers to the nearest tenth. 1. what is the distance from the peak of the kite to the intersection of the diagonals? 2. what is the distance from intersection of the diagonals to the top of the tail? 3. what is the length of the longer diagonal?
Answers: 3
Mathematics, 22.06.2019 03:00
(: the two box-and- whisker plots below show the scores on a math exam for two classes. what 2 things do the interquartile range tell you about the two classes?
Answers: 2
Conveyor Belt Motors (20 points) The brushes in the motors that control the conveyor belts at Delect...
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