galaxytorrents
Calculators
General
Algebra
Geometry
Coordinate-geometry
Statistics
Calculus
Qna
Math
galaxytorrents
galaxytorrents
Home
General
Algebra
Geometry
Coordinate-geometry
Statistics
Calculus
Qna
Math
MATH SOLVE
Home
The life in hours of a 75-watt light bulb is known to be normally distributed with σ = 25 hours. a random sample of 20 bulbs has a mean life of x = 1014 hours. (a) construct a 99% two-sided confidence interval on the mean life. (b) construct a 99% lower-confidence bound on the mean life. compare the lower bound of this confidence interval with the one in part (a).
General
2 months ago
The histogram shows the number of chicks born to non-migratory Canada geese in a city park, with the horizontal axis representing the number of hatchlings and the vertical axis representing the number of nests. For example, there were 15 nests with 0-3 hatchlings.In order to monitor the geese population, the state wildlife service annually samples the number of hatchlings from 30 nests using a simulation. Which number of hatchlings would be a reasonable outcome for the simulation?
General
2 months ago
Use a while loop to determine how many terms in the series 3k^2 are required for the sum to surpass 2000
General
2 months ago
Let a = x^2 + 4. Rewrite the following equation in terms of a and set it equal to zero. ( x^2 + 4 )^2 +32 = 12x^2 + 48In resulting equation what is the coefficient of the a term ?In the resulting equation what is the constant?
General
2 months ago
Find the indicated limit, if it exists. limit of f of x as x approaches 9 where f of x equals x plus 9 when x is less than 9 and f of x equals 27 minus x when x is greater than or equal to 9 The limit does not exist. 18 0 9
General
2 months ago
Which description best fits the graph?A. Negatively skewedB. Positively skewedC. Normal distribution
General
2 months ago
consider the parabola represented by the equation -2y^2=4x part 1: this parabola will open to the ____part 2: the equation of the directrix of the parabola is ____ part 3: the focus of the parabola is ____
General
2 months ago
Which expression is a cube root of -2i?1) 3sqrt2(cos(210))+isin(210))2) 3sqrt2(cos(260))+isin(260))3) 3sqrt2(cos(90))+isin(90))4) 3sqrt2(cos(60))+isin(60))
General
2 months ago
The following table represents the running times of the men's 100 meters final at the London Olympics.Can this data be fit in to a normal distribution?What is the standard deviation of the times of the first seven runners?
General
2 months ago
Please help and explain how to get the answer! I just need to know how to do itYou are re-tiling the entry to your home and want to create a fancy circular medallion in the center. You want to create a large circle with a smaller circle centered inside. You want to tile the large circle with blue tile and the smaller circle with yellow tile. The circumference of the large circle is 113.097 inches and the radius of the smaller circle is 7 inches. How much blue tile do you need (in square inches)?
General
2 months ago
Math help.... Please.... This doesn't make any sense to me. Pls help me. I'm not begging, but this problem has been stumping me and I don't understand how to do it.... I'm using 99 points to give to a person who maybe can help me. I will give Brainliest if you are correct.Thank you so very kindly.When Julia dumped out the big jar of dimes and nickles she found 287 coins. If there was $20.50 in the jar, how many of each kind of coin was there?? Don't answer this unless you actually are answering the question!!! If you have any questions, or it doesn't make sense, please say something in the "Ask for Details" section. Thanxs again!!!
General
2 months ago
You brake your car from a speed of 55 mph. The table shows data that represent your car's speed versus the amount of time elapsed from the moment that you began to brake. Elapsed Time (sec) Speed (mph) 1 45 2 35 3 25 4 15 5 15 6 15 Evaluate the following graph based on the data in the table. What is the slope of the line segment that represents the period of time during which the speed decreases? a. The slope of the decrease is 0. c. The slope of the decrease is 10. b. The slope of the decrease is -10. d. The slope of the decrease is -11.
General
2 months ago
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 72 inches and standard deviation 4 inches.(a) what is the probability that an 18-year-old man selected at random is between 71 and 73 inches tall? (round your answer to four decimal places.) .2013 incorrect: your answer is incorrect. (b) if a random sample of twenty-three 18-year-old men is selected, what is the probability that the mean height x is between 71 and 73 inches? (round your answer to four decimal places.)
General
2 months ago
Which of the following questions represents this equation? 8 ÷ y = 8 The sum of 8 and what number is equal to 8? Eight divided by what number is equal to 8? The quotient of what number and 8 is equal to 8? What number divided by 8 is equal to 8?
General
2 months ago
the hypotenuse of a triangle is one foot more than twice the length of the shorter legal. the longer leg is seven feet longer than the shorter leg. find the dimensions of the triangle
General
2 months ago
Ariel completes the square for the equation x2 - 16x + 17 = 0. Which of the following equations reveals the vertex of the parabola?A.y = (x - 4)^2 - 47 B.y = (x - 9)^2 - 47 C.y = (x - 6)^2 - 45 D.y = (x - 8)^2 - 47
General
2 months ago
Suppose a basketball player has made 233 out of 402 free throws. if the player makes the next 3 free throws, i will pay you $166. otherwise you pay me $40. step 1 of 2: find the expected value of the proposition. round your answer to two decimal places. losses must be expressed as negative values.
General
2 months ago
Alexus deposited $1900 into a savings account that pays a simple annual interest rate of 1.8%. how much interest will she earn after 9 months?
General
2 months ago
A rectangular stirp of asphalt paving is 5 meters longer than it is wide. its area is 300 square meters. find the length and width
General
2 months ago
A commercial cherry grower estimates from past records that if 20 trees are planted per acre, then each tree will yield an average of 36 pounds of cherries per season. if, for each additional tree planted per acre (up to 25), the average yield per tree is reduced by 1 pound, how many trees should be planted per acre to obtain the maximum yield per acre? what is the maximum yield?
General
2 months ago
Previous
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Next