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MATH SOLVE
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A manufacturer of flashlight batteries took a sample of 13 batteries from a day’s production and used them continuously until they failed to work. The life lengths of the batteries, in hours, until they failed were: 342, 426, 317, 545, 264, 451, 1049, 631, 512, 266, 492, 562, and 298. At the .05 level of significance, is there evidence to suggest that the mean life length of the batteries produced by this manufacturer is more than 400 hours? A. Yes, because the test value 1.257 is less than the critical value 1.782 B. No, because the test value 1.257 is greater than the critical value 1.115 C. No, because the p-value for this test is equal to .1164 D. Yes, because the test value 1.257 is less than the critical value 2.179 Reset Selection
General
2 months ago
I’m so desperate pls help hahah
General
2 months ago
For this assignment, you are asked to explain the facts. Please do not copy and paste the definitions on this assignment use your own words. Pick a function that you are going to work with. Circle onef(x) = sin (x) g(x) = cos (x)Graph your function below:Unit Circle:Using the Unit Circle and your graph please explain in your own words each part of your function.Amplitude: (Provide your own explanation) Please explain how the graph and the Unit Circle relate to the AmplitudePeriod: (Provide your own explanation) Please explain how the graph and the Unit Circle relate to the PeriodDomain: (Provide your own explanation) Please explain how the graph and the Unit Circle relate to the DomainRange: (Provide your own explanation) Please explain how the graph and the Unit Circle relate to the Rangex - Intercepts: (Provide your own explanation) Please explain how the graph and the Unit Circle relate to the x intercept
General
2 months ago
A princess hat for a costume is shaped like a cone. The base of the cone is 12 in across and the height is 8 in. The slant height of the outside edge, which is unknown, is the hypotenuse of the right triangle formed with the radius and the height of the cone. (a) Sketch the princess hat. Label the known lengths as described and label the unknown length as x. (b) what is the slant height of the outside edge?plz help!
General
2 months ago
Given: AD≅AOFind: m∠OAD, m∠DBA.
General
2 months ago
HELPPGiven: Diameter QG,mFG=46°, mQE =58° Find: m∠GQF and m∠GPFi already know that m∠GPF is 52idk what ∠GQF
General
2 months ago
Is the following shape a right triangle? How do you know?
General
2 months ago
The diagram below shows a square inside a regular octagon. The apothem of the octagon is 13.28 units. To the nearest square unit, what is the area of the shaded region?
General
2 months ago
Use the spinner to find each theoretical probabilityP (a number no more than 5) P (an even number) P (a number less than 3)
General
2 months ago
Bernie wants to write equations in the form y=mx+b for the lines passing through point P that are parallel and perpendicular to line r. First he finds the slopes of these two lines. What could he do next to find the y-intercepts?
General
2 months ago
(3 1/6 - 1 5/8) divided by (8 3/4 - 1.35)
General
2 months ago
what's the solution to y>3x+2
General
2 months ago
The radius of the circle whose equation is (x - 3)² + (y + 1)² = 16 is A). 4 B). 8 C). 16
General
2 months ago
Assume that there is a 55% rate of disk drive failure in a year. a. If all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. If copies of all your computer data are stored on threethree independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive? a. With two hard disk drives, the probability that catastrophe can be avoided is nothing. (Round to four decimal places as needed.) b. With threethree hard disk drives, the probability that catastrophe can be avoided is nothing. (Round to six decimal places as needed.)
General
2 months ago
Mario invests 1,500 in a savings account that earns 2% interest a year. He also plans to set aside $50 cash a month. A:2100(1.02)x B:1500(1.02)x+600x C:500(1.02)x-600x D:2100 PLS HELP TIMED!!!
General
2 months ago
The area of the triangle is given by the functions area of triangle A:x2 + x area of triangle B: x2 - 3x which functions represents the sum of the areas of the two triangles? 1. 4x 2.-4x 3.x2-4x 4.2x2-2x
General
2 months ago
What is the value of y in this simplified expression?k + m 10
General
2 months ago
Type in only your numerical answer to the following problem; do not type any words or letters with your answer. The population of Neverland was 4.3 billion, one hundred years ago. Currently the population is 5.2 billion. What will this population be 100 years from now? NOTE: Round to the nearest tenth of a billion.
General
2 months ago
please help :(Determine the number of solutions for the quadratic function f(x) = 3x^2 + 5x + 10.
General
2 months ago
PLEASE HELP ASAP!Put the following steps for constructing a perpendicularbisector of line segment __AB in order.Using a straight edge, draw a line connecting thetwo points where the arcs cross.__Place the point of the compass on point B anddraw an arc across AB__Open his compass so that the distance from thetwo points of the compass is wider than half the lengthof AB__Place the point of the compass on point A anddraw an arc across AB
General
2 months ago
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