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MATH SOLVE
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Is a measure of 26 inches "far away" from a mean of 16 inches? As someone with knowledge of statistics, you answer "it depends" and request the standard deviation of the underlying data. (a) Suppose the data come from a sample whose standard deviation is 2 inches. How many standard deviations is 26 inches from 16 inches? (b) Is 26 inches far away from a mean of 16 inches? (c) Suppose the standard deviation of the underlying data is 7 inches. Is 26 inches far away from a mean of 16 inches?
General
2 months ago
Two students walk in the same direction along a straight path, at a constant speed—one at 0.90 m/s and the other at 1.90 m/s. a. Assuming that they start at the same point and the same time, how much sooner does the faster student arrive at a destination 780 m away? b. How far would the students have to walk so that the faster student arrives 5.50 min before the slower student?
General
2 months ago
Mrs.SImpson waters her geraniums once every 3 days, and she waters her other house plants once a week. How often does mrs.Simpson water all the plants on the same day?
General
2 months ago
Find the limit, if it exists. (If an answer does not exist, enter DNE.)lim x->0.1^- 10x-1/|10x^3-x^2|
General
2 months ago
A sample of 1600 computer chips revealed that 38% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature claimed that above 35% do not fail in the first 1000 hours of their use. Is there sufficient evidence at the 0.02 level to support the company's claim? State the null and alternative hypotheses for the above scenario.
General
2 months ago
Find the y-coordinates of the points that are 10 units away from the point (-7, 6) that have an x-coordinate of 1.
General
2 months ago
Christmas Tree lights are used not only for Christmas trees, but sometimes to decorate college dorm rooms. Suppose that a string has 20 light bulbs. These lights are all wired in series, so that if one light bulb fails, the whole string fails. The probability that any one light fails is 0.02. Each of the individual lights are independent of each other. What is the probability that the string will NOT fail?a. 0.02b. 0.40c. 0.668d. 0.333
General
2 months ago
Formulate but do not solve the problem.The Johnson Farm has 500 acres of land allotted for cultivating corn and wheat. The cost of cultivating corn and wheat (including seeds and labor) is $42 and $28 per acre, respectively. Jacob Johnson has $16,800 available for cultivating these crops. If he wishes to use all the allotted land and his entire budget for cultivating these two crops, how many acres of each crop should he plant? (Let x and y denote the number of acres of corn and wheat, respectively.)
General
2 months ago
advantages and disadvantages of mean, median and mode
General
2 months ago
A police officer is using a radar device to check motorists’ speeds. Prior to beginning the speed check, the officer estimates that 40 percent of motorists will be driving more than 5 miles per hour over the speed limit. Assuming that the police officer’s estimate is correct, what is the probability that among 4 randomly selected motorists, the officer will find at least 1 motorist driving more than 5 miles per hour over the speed limit?
General
2 months ago
The volume of a cylinder with height hand radius ris given by the formula below.V= lr2 hComplete the equation below by writing an equation equivalent to height, h, of a cylinder.
General
2 months ago
The time (in minutes) between arrivals of customers to a post office is to be modelled by the Exponential distribution with mean 0.44. Please give your answers to two decimal places. What is the probability that the time between consecutive customers is less than 15 seconds?
General
2 months ago
The time that customers wait to be served at the delicatessen for a grocery store follows the uniform distribution between 0 and 7 minutes. what is the probability that a randomly selected customer will wait between 1 and 5 minutes at the deli?
General
2 months ago
The voltage V in a simple electrical circuit is slowly decreasing as the battery wears out. The resistance R is slowly increasing as the resistor heats up. Use Ohm's Law, V = IR, to find how the current I is changing at the moment when R = 389 Ω, I = 0.03 A, dV/dt = −0.06 V/s, and dR/dt = 0.07 Ω/s. (Round your answer to six decimal places.)
General
2 months ago
The value of a baseball player's rookie card began to increaseonce the player retired in 1996. The value has increased by$2.52 each year since then.a. How much was the baseball card worth in 1997?In 1998? In 1999?b. Construct Arguments Why is there not a proportionalrelationship between the years since the player retired andthe card value? Explain.
General
2 months ago
The yield of orange trees is reduced if they are planted too close together. If there are 30 trees per acre, each tree produces 400 oranges. For each additional tree in the acre, the yield is reduced by 7 oranges per tree. How many trees per acre yield the largest crop for farmer Boyles?
General
2 months ago
Find the area of the shape shown below.
General
2 months ago
9. Water is added to two containers for 20 minutes. The equations below model the ounces ofwater, y, in each container after x minutes. At the time when the containers hold the sameamount of water, how much water do they hold?Container A: y = 62x+48Container B: y=-2x^2+80x+120234 ounces482 ounces792 ounces920 ounces
General
2 months ago
Four friends ordered a pizza cut into eight slices. The whole pizza was eaten, with each friend eating a different number of slices. If no slice was divided, and no friend ate more than the other three put together, how many slices did each friend eat?
General
2 months ago
You are in charge of buying food for your family reunion. You spent $90 on hamburgers and turkey burgers. you pay $1.50 for each hamburger and two dollars for each turkey burger. let X be the number of hamburgers and Y be the number of turkey burgers. Write an equation in standard form that represents the situation
General
2 months ago
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