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MATH SOLVE
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Which of the following digits might composite numbers greater than 10 have in the ones place? Select all that apply.1234
General
3 months ago
4. A process has been developed that can transform ordinary iron into a kind of super iron called metallic glass. Metallic glass is three to four times stronger than the toughest steel alloys. To estimate the mean temperature, u, at which a particular type of metallic glass becomes brittle, 25 pieces of this metallic glass were randomly sampled from a recent production run. Each piece was subjected to higher and higher temperatures until it became brittle. The temperature at which brittleness first appeared was recorded for each piece in the sample. The following results were obtained: X 480°F and s 11°F Construct a 95% confidence interval to estimate . (20 points)
General
3 months ago
Find the P-value for the indicated hypothesis test. An airline claims that the no-show rate for passengers booked on its flights is less than 6%. Of 380 randomly selected reservations, 19 were no-shows. Find the P-value for a test of the airline's claim. A. 0.3508 B. 0.2061 C. 0.0746 D. 0.1230
General
3 months ago
About Here are two relations defined on the set {a, b, c, d}: S = { (a, b), (a, c), (c, d), (c, a) } R = { (b, c), (c, b), (a, d), (d, b) } Write each relation as a set of ordered pairs. (a) S ο R (b) R ο S (c) S ο S
General
3 months ago
Let X be the number of material anomalies occurring in a particular region of an aircraft gas-turbine disk. The article "Methodology for Probabilistic Life Prediction of Multiple-Anomaly Materials"� proposes a Poisson distribution for X. Suppose that ? = 4. (Round your answers to three decimal places.) (a) Compute both P(X ? 4) and P(X < 4). (b) Compute P(4 ? X ? 5). (c) Compute P(5 ? X). (d) What is the probability that the number of anomalies does not exceed the mean value by more than one standard deviation?
General
3 months ago
Suppose a sociologist is interested in testing if the average age at puberty of girls living is Thailand is different from the average age of puberty of girls living in Japan. To test her theory, she selects a random sample of 50 young Thai women and 50 young Japanese women and determines that the average age at puberty of the women in Japan is 1.7 years younger than the average age at puberty of the Thai women. Which of the following would change if instead the average age at puberty for Japanese women is 0.8 years younger?a) The p-value would increase.b) The p-value would decrease.c) There would be no difference because Japanese women still went through puberty at a younger age.d) The sample standard deviation would be larger if the difference were less.e) Exactly 2 of the above are correct.
General
3 months ago
Does second-hand smoke increase the risk of a low birthweight? A baby is considered having low birth weight if he/she weighs less than 5.5 pounds at birth. According to the National Center of Health Statistics, about 7.8% of all babies born in the U.S. are categorized as low birthweight. Suspecting that the national percentage is higher than 7.8%, researchers randomly select 1200 babies whose mothers had extensive exposure to second-hand smoke during pregnancy and find that 10.4% of the sampled babies are categorized as low birth weight. Let p be the proportion of all babies in the U.S. that are categorized as "low birth weight." Give the null and alternative hypotheses for this research question. H 0 : p = 0.078 H 0 : p = 0.078 H a : p > 0.078 H 0 : p = 0.104
General
3 months ago
2.The diagonals of a rhombus are in the ratio 5:12. If its perimeter is 104 CM, findthe lengths of the sides and the diagonals.
General
3 months ago
A company makes wax candles in the shape of a cylinder. Each candle has a radius of 2 inches and a height of 7 inches. How much wax will the company need to make 210 candles?
General
3 months ago
The equation of three lines are given below Line 1: 2y= 5x +6 Line 2: y=2/5x-1 Line 3: 10x+4y=-6 For each pair of lines, determine whether they are parallel perpendicular or neither
General
3 months ago
The graph below could be the graph of which exponential function?
General
3 months ago
Another geometry question :DPentagon ABCDE and pentagon A'B'C'D'E' are shown on the coordinate plane below:Which two transformations are applied to pentagon ABCDE to create A'B'C'D'E'? Translated according to the rule (x, y) →(x + 8, y + 2) and reflected across the x-axis Translated according to the rule (x, y) →(x + 2, y + 8) and reflected across the y-axis Translated according to the rule (x, y) →(x + 8, y + 2) and reflected across the y-axis Translated according to the rule (x, y) →(x + 2, y + 8) and reflected across the x-axis
General
3 months ago
Your delivery runs took 7 hours 12 minutes on Monday,6 hours 46 minutes on Wednesday and 6 hours 53 minutes on Friday. What was the average time for a delivery run?
General
3 months ago
A nature preserve opened with a population of 6 rabbits. After one year, the number of rabbits had doubled. The year after that, the number of rabbits doubled once again. Assuming that this pattern continues, plot the solution points for the first three years along with the y-intercept. Let y represent the number of rabbits on the nature preserve after x years.
General
3 months ago
Match each formula to its correct description. 1. simple interest i = prt 2. distance r = d/t3. time money is invested r = l/pt4. rate of speed t = i/pt5. rate of interest t = d/r6. time spent driving d = rt
General
3 months ago
What is the y-coordinate of the point that divides the directed line segment from J to K into a ratio of 2:3?–6–557
General
3 months ago
Thomas buys a cardboard sheet that is 8 by 12 inches. Let x be the side length of each cutout. Create an equation for the volume of the box, find the zeroes, and sketch the graph of the function. What is the size of the cutout he needs to make so that he can fit the most marbles in the box? If Thomas wants a volume of 12 cubic inches, what size does the cutout need to be? What would be the dimensions of this box? Using complete sentences, explain the connection between the cutout and the volume of the box. Design an equation that would work for any cardboard sheet length, q, and width, p
General
3 months ago
Jasmine owns a jewelry store and marks up the price from the distributor to earn a profit. She buys a necklace for $100, a pair of earrings for $130, and a ring for $160 . she wants to earn at least $40 on each of the items but does not want to mark up any price by more than $80.A. WHAT IS THE RANGE OF PERCENTS THAT JASMINE CAN MARKUP EACH ITEM SO THAT IT FITS INTO HER CRITERIAB. SUPPOSE JASMINE WANTS TO MARKUP ALL 3 ITEMS USING THE SAME PERCENT BUT ALSO MAXIMIZE HER PROFIT. WHAT PERCENT SHOULD SHE USEC. USING THE PERCENT FROM PART B, FIND EACH MARKED UP PRICED.USING THE RESULTS FROM PART C, FIND HER TOTAL PROFIT
General
3 months ago
Identify the angle measures of PQRS.
General
3 months ago
Let p: The number is even. Let q: The number is prime. Which statement is represented by p ∧ q?The number is even and prime.The number is even or prime.The number is even if the number is prime.The number is prime if the number is even
General
3 months ago
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