Mathematics, 08.10.2021 19:30 khuak877
Under normal operations the process that produces hypodermic needles produces needles whose diameters are normally distributed with a mean of 1.65 mm and a standard deviation of 0.01 mm. Every day, before operations begin, the machine is tested to make sure it is operating normally. The test consists of measuring the lengths of 5 needles coming off the machine. If the average diameter of the 5 needles is either greater than 1.655 or less than 1.645 the machine is shut down and inspected.
a) One day, when the test is conducted, the average diameter of the needles is 1.648 mm. Notice, the machine is not shut down this day. What is the p-value of the test this day?
b) Another day, when the test is conducted the average diameter of the needles is 1.658 mm. Notice, the machine is shut down this day. What is the p-value of the test this day?
c) What is the significance level of the test?
d) When the machine is operating normally, what is the probability it is shut down unnecessarily based on the results of the test? (In other words, what is the probability of
making a Type I error?)
e) One day, the machine is out of adjustment and is producing needles whose diameters have a mean of 1.655mm and a standard deviation of 0.01mm. What is the power of the test?
f) Another day, the machine is out of adjustment and is producing needles whose diameters have a mean of 1.65mm but a standard deviation of 0.02mm. What is the power of the test?
g) There is a screw that loosens on occasion causing the standard deviation of the diameters to increase to 0.02mm (the mean is still 1.65mm). Find the sample size needed to have a 95% chance of detecting this when it has occurred (assuming the rejection region remains the same whatever sample size you use).
Answers: 2
Mathematics, 21.06.2019 20:00
Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'
Answers: 1
Mathematics, 21.06.2019 22:00
Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4
Answers: 1
Mathematics, 21.06.2019 23:30
Which graph represents the same relation is the sa which graph represents the same relation as the set {(-3-2)}
Answers: 3
Mathematics, 22.06.2019 00:00
Consider the following geometry problems in 3-space enter t or f depending on whether the statement is true or false. (you must enter t or f -- true and false will not work.) f equation editorequation editor 1. a plane and a line either intersect or are parallel t equation editorequation editor 2. two planes parallel to a third plane are parallel f equation editorequation editor 3. two lines either intersect or are parallel f equation editorequation editor 4. two planes orthogonal to a third plane are parallel f equation editorequation editor 5. two planes orthogonal to a line are parallel f equation editorequation editor 6. two planes either intersect or are parallel f equation editorequation editor 7. two lines orthogonal to a third line are parallel t equation editorequation editor 8. two lines parallel to a third line are parallel t equation editorequation editor 9. two planes parallel to a line are parallel f equation editorequation editor 10. two lines parallel to a plane are parallel f equation editorequation editor 11. two lines orthogonal to a plane are parallel
Answers: 2
Under normal operations the process that produces hypodermic needles produces needles whose diameter...
Mathematics, 18.11.2020 16:50
Mathematics, 18.11.2020 16:50
Social Studies, 18.11.2020 16:50
Computers and Technology, 18.11.2020 16:50