zzbeihe
Calculators
General
Algebra
Geometry
Coordinate-geometry
Statistics
Calculus
Qna
Math
zzbeihe
zzbeihe
Home
General
Algebra
Geometry
Coordinate-geometry
Statistics
Calculus
Qna
Math
MATH SOLVE
Home
General
A fuel-tanker's tank is 50 feet long and has a diameter of seven feet. Determine the surface area of the fuel tank.
General
4 months ago
this is really easy but I just can’t think rn. Any help please?
General
4 months ago
The edges of the diameter of a circle are at (-1,2) and (3,-1). Write the equation of the circle in general form.If anyone can also list the steps it would really be appreciated :) I'm very lost on this whole subject at the moment haha
General
4 months ago
Robert is pouring wax into cylindrical candle containers. Approximately 226.19 cubic inches of wax fill one candle jar. Which image represents that volume?
General
4 months ago
What is the perimeter of quadrilateral ABCD with verticals at A(-11,-6) b(-3,0) c(1,0) and d (1,-6) Answer in units
General
4 months ago
Brainly.comWhat is your question?Middle SchoolMathematics 5+3 ptsCréstòr bought a terrarium that is 24 inches wide, 48 inches long and 20 inches high. A bag of special dirt at the pet store only fills 1,000 cubic inches and costs $8.00 per bag.Part A: How many bags does Crèstòr need to fill his terrarium? Part B: How much do the bags cost after a 6% sales tax?
General
4 months ago
The line plot below shows the lengths of all the pieces of string Emma used for an art project .she cut all these pieces from one original piece of string ?
General
4 months ago
Again, it looks easy but I cannot thinkkkk
General
4 months ago
Mr. Trager has $500.00 to spend at a bicycle store. All prices listed below include tax. 42 • He buys a new bicycle for $273.98. • He buys 3 bicycle reflectors for $7.23 each and 1 bicycle helmet for $42.36. • He plans to use the remaining money to buy new cycling outfits for $78.12 each.
General
4 months ago
PLEASE HELP ME PLEASEEEEEEEEEEEEEEEEEEEEEEEE!!!!!!!!!!!!!!!!!!!!!!! I'M DYING AND FAILING MATH JUST PLEASE AWNSER THIS1.In another project, researchers caught and tagged 85 sea lions in a bay. Later they caught and released 50 sea lions. Of those, 9 had tags. Estimate the sea lion population in the bay.about 194 sea lionsabout 153 sea lionsabout 529 sea lionsabout 472 sea lions2.The table shows the results of a biologist who captures and tags lake trout, and then sets them free. What is the trout population in the lake?about 90about 340about 130about 2503.A park ranger tags 100 animals. Use a proportion to estimate the total population for the sample.83 out of 125 animals are tagged95 animals67 animals142 animals151 animals4.Use the table. Estimate the total deer population for year 8.about 1,815 deerabout 2,467 deerabout 1,934 deerabout 2,081 deer5.The total number of ducks in a zoo is known to be 4,109. Of these 4,109 ducks, 960 have been marked. If you catch 1,100 of these ducks, how many would you expect to be marked?143257225189
General
4 months ago
A random sample of 8888 eighth grade students' scores on a national mathematics assessment test has a mean score of 278278. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam is more than 270270. Assume that the population standard deviation is 3838. At alphaαequals=0.150.15, is there enough evidence to support the administrator's claim? Complete parts (a) through
General
4 months ago
A severe storm has an average peak wave height of 16.4 feet for waves hitting the shore. Suppose that a storm is in progress with a severe storm class rating. Let us say that we want to set up a statistical test to see if the wave action (i.e., height) is dying down or getting worse. Suppose that you do not know if the storm is getting worse or dying out. You just want to test the hypothesis that the average wave height is different (either up or down) from the severe storm class rating. What would you use for the alternate hypothesis
General
4 months ago
A recent survey of 35,101 randomly selected U.S. adults studied the religious affiliation of Americans. The survey interviewed 245 people in Maine. Suppose that this is a simple random sample of adult residents of Maine. Of these 245 people, 56 said they attend religious services at least once a week. A 95% confidence interval for the proportion of all residents of Maine who attend religious services at least once a week is closest to
General
4 months ago
A study claims that college students spend an average of 4 hours or less studying per day. A researcher wants to check if this claim is true. A random sample of 121 college students randomly selected and it showed that average of hours studying per day was 3.15 with a standard deviation of 1.2 hours. Using the 10% significance level, can you conclude that the claim college students spend an average of 4 hours or less studying per day is valid?
General
4 months ago
The weight W that a horizontal beam can support varies inversely as the length L of the beam. Suppose that an 8 dash m beam can support 900 kg. How many kilograms can a 19 dash m beam support?
General
4 months ago
Andrew plans to retire in 32 years. He plans to invest part of his retirement funds in stocks, so he seeks out information on past returns. He learns that over the entire 20th century, the real (that is, adjusted for inflation) annual returns on U.S. common stocks had mean 8.7% and standard deviation 20.2%. The distribution of annual returns on common stocks is roughly symmetric, so the mean return over even a moderate number of years is close to Normal. (a) What is the probability (assuming that the past pattern of variation continues) that the mean annual return on common stocks over the next 32 years will exceed 14%
General
4 months ago
For the following claim, find the null and alternative hypotheses, test statistic, critical value, and draw a conclusion. Assume that a simple random sample has been selected from a normally distributed population. Answer parts a-d. Claim: The mean IQ score of statistics professors is greater than 121. Sample data: nequals13, x overbarequals122, sequals13. The significance level is alphaequals0.05.
General
4 months ago
An article in a local town newspaper discusses the results of state test scores in their town. The reporter headlines, "The students in this town don't have the necessary skills." The state test says that a score of 261 or higher on its test reflects the student has the skills needed to graduate. A local town newspaper conducted a random sample of 200 students and found the mean to be 257 and a standard deviation of 41 points. Is this sample result good evidence that the mean of all students in this town is less than 261
General
4 months ago
A bond analyst is analyzing the interest rates for equivalent municipal bonds issued by two different states. At α = 0.05, we wish to test whether there is enough evidence to conclude that there is a difference in the interest rates paid by the two states. What is the value of the test statistic? State A State B Sample size 80 50 Mean interest rate (%) 4.0 4.5 Population variance 0.04 0.03
General
4 months ago
Mensurationb) The dimensions of a wall is 30 m x 5m x 20 cm. It contains three windows eachof 3m x 1.5 m. How many bricks of size 20 cm x 10 cm x 5 cm are required tobuild the wall leaving 10% of the space for the cement work? Also find the cost ofbricks at the rate of Rs 9000 per 1000 bricks,
General
4 months ago
Previous
1
2
3
Next