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MATH SOLVE
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The bacterial strain Acinetobacter has been tested for its adhesion properties, which is believed to follow a normal distribution. A sample of five measurements gave readings of 2.69, 5.76, 2.67, 1.62 and 4.12 dyne-cm. Assume that the standard deviation is known to be 0.7 dyne-cm_2 and that the scientists are interested in high adhesion (at least 2.66 dyne-cm^2)(a) Should the alternative hypothesis be one-sided or two-sided? Write down the null and alternative hypotheses.(b) Based on your answer to part (a), test the hypothesis to see if the mean adhesion is at least 2.66 dyne-cm_2 (Use the p-value approach) What can be concluded?
General
1 month ago
A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 418 gram setting. It is believed that the machine is underfilling the bags. A 9 bag sample had a mean of 411 grams with a standard deviation of 20 . A level of significance of 0.025 will be used. Assume the population distribution is approximately normal. Is there sufficient evidence to support the claim that the bags are underfilled?
General
1 month ago
Two vertical poles, one 4 ft high and the other 16 ft high, stand 15 feet apart on a flat field. A worker wants to support both poles by running rope from the ground to the top of each post. If the worker wants to stake both ropes in the ground at the same point, where should the stake be placed to use the least amount of rope?
General
1 month ago
A DJ has a total of 1075 dance rock and country songs on her system. The dance selection is three times the size of the rock selection. The country selection has 105 more songs than the rock selection. How many songs on the system are dance? How many rock? How many country?
General
1 month ago
Find the slope and y-intercept from the graph.m=________ b=________(m is slope)(b is y-intercept)
General
1 month ago
Solve2x + 3y =2/33x - 4y = 18
General
1 month ago
A commercial farm uses a machine that packages carrots in eighteen ounce portions. A sample of 7 packages of carrots has a standard deviation of 0.19. Construct the 95% confidence interval to estimate the standard deviation of the weights of the packages prepared by the machine. Round your answers to two decimal places.
General
1 month ago
Alice borrowed 16700 from the bank at a simple interest rate of 9% to purchase a used car.At the end of the loan,she had paid a total of 24215.How many months was the car loan
General
1 month ago
how many pounds of candy worth $12 per pound should be mixed with candy costing $19 per pound to produce a 70 pound mixture that sells for $15 per pound?
General
1 month ago
There is a contest being held at Company A. Company A employs forty people. The first 3 employees to correctly complete a riddle each receives an extra vacation day that year. What is the probability that those first 3 employees are in the order of Jack, Bill, and John?
General
1 month ago
Compute the work done by the force F = sin(x + y), xy, (x^2)z> in moving an object along the trajectory that is the line segment from (1, 1, 1) to (2, 2, 2) followed by the line segment from (2, 2, 2) to (3, 6, 8) when force is measured in Newtons and distance in meters.
General
1 month ago
Arica can run 1/6 of a kilometer in a minute her school is 3/4 A kilometer away from her home At this speed how long will it take Erica to run from home to school
General
1 month ago
Solve for x: 3x−8≤23 OR −4x+26≥6
General
1 month ago
when the polynomial f(x) is divided by (x-2) the remainder is 4, and when it is divided by (x-3) the remainder is 7. Given that f(x) may be written in the form f(x)= (x-2)(x-3)Q(x)+ax+b, find the remainder when f(x) is divided by (x-2)(x-3). If also f(x) is a cubic function in which the coefficient of x^3 is unity and f(1)=1, determine Q(x)
General
1 month ago
MaryAnn is printing pictures from her recent trip to Europe. An online print shop charges $0.15 per4x6 inch print, along with a flat rate shipping charge of $3.00. If MaryAnn has $35 to spend, howmany prints can she order?
General
1 month ago
Design a rectangular milk carton box of width $$w, length $$l, and height $$h, which holds $$128 cubic cm of milk. The sides of the box cost $$1 cent per square cm and the top and bottom cost $$2 cents per square cm. Find the dimensions of the box that minimize the total cost of materials used.
General
1 month ago
If [tex]sin\theta = \frac{1}{3}[/tex] , [tex]\frac{\pi }{2} \ \textless \ \theta \ \textless \ \pi[/tex]. Find the exact value of [tex]sin (\theta + \frac{\pi }{6})[/tex]
General
1 month ago
The ratio of the width to the length of a rectangle is 2:3, respectively. Answer each of the following. By what percent would the area of the rectangle change if the width of the rectangle is increased by 50% and the length is increased by the same number of units?
General
1 month ago
How do you even do these? Can someone help, literally clueless. I would really appreciate answers and an explanation. Thank you! :)
General
1 month ago
A student wondered if more than 10% of students enrolled in an introductory Chemistry class dropped before the midterm. He noticed that 2 out of 15 of his friends in the class dropped before the midterm. Based on his sample, he performed a hypothesis test. Is the hypothesis test a one-tailed or two-tailed test?Choose the correct answer below.A.It is a two-tailed test since the null hypothesis states that the parameter is not equal to the hypothesized valued.B.It is a two-tailed test since the alternative hypothesis states that the parameter is not equal to the hypothesized value.C.It is a one-tailed test since the alternative hypothesis states that the parameter is greater than the hypothesized value.D.It is a one-tailed test since the alternative hypothesis states that the parameter is not equal to the hypothesized value.E.It is a two-tailed test since the alternative hypothesis states that the parameter is greater than they hypothesized value.
General
1 month ago
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