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Ms. Hamby gave a quiz. Two students’ work and the answer key are shown. Ms. Hamby accepts equivalent answers in any form.Based on Ms. Hamby’s answer key, how many questions did Student A answer correctly? Explain your response. Based on Ms. Hamby’s answer key, how many questions did Student B answer correctly? Explain your response.
General
2 months ago
I WILL AWARD BRAINLIEST!! PLEASE HELP!!! The figure below shows the movement of a pedestrian from point B to point E. Using the graph, answer the following questions: A) What is the speed of the pedestrian BC, CD, and DE? B) After what time since the stop did he arrive at point E? C) Write the formulas for function d(t) for sections BC, CD, and DE
General
2 months ago
A "planet transit" is a rare celestial event in which a planet appears to cross in front of its star as seen from Earth. The planet transit causes a noticeable dip in the star's brightness, allowing scientists to detect a new planet even though it is not directly visible. The National Aeronautics and Space Administration (NASA) recently launched its Kepler mission, designed to discover new planets in the Milky Way by detecting extrasolar planet transits. After one year of the mission in which 3,000 stars were monitored, NASA announced that 5 planet transits were detected. (NASA, American Astronomical Society, Jan. 4, 2010.) Assume that the number of planet transits discovered for every 3,000 stars follows a Poisson distribution with λ=5. What is the probability that, in the next 3,000 stars monitored by the Kepler mission, more than 4 planet transits will be seen?
General
2 months ago
A boat capsized and sank in a lake. Based on an assumption of a mean weight of 149 lb, the boat was rated to carry 70 passengers (so the load limit was 10 comma 430 lb). After the boat sank, the assumed mean weight for similar boats was changed from 149 lb to 173 lb. Complete parts a and b below. a. Assume that a similar boat is loaded with 70 passengers, and assume that the weights of people are normally distributed with a mean of 177.2 lb and a standard deviation of 35.8 lb. Find the probability that the boat is overloaded because the 70 passengers have a mean weight greater than 149 lb. The probability is
General
2 months ago
Use the Venn diagram to calculate conditional probabilities.Which conditional probabilities are correct? Check all that apply.P(D | F) = StartFraction 6 Over 34 EndFractionP(E | D) = StartFraction 7 Over 25 EndFractionP(D | E) = StartFraction 7 Over 25 EndFractionP(F | E) = StartFraction 8 Over 18 EndFractionP(E | F) = StartFraction 13 Over 21 EndFraction
General
2 months ago
Ellie buys a mobile phone in spain for €352.50. Her brother jack buys an identical phone from japan for ¥39856. Using exchange rates £1 = €1.41, £1 = ¥188. Which country is the mobile phone cheaper
General
2 months ago
The hypotenuese of an isosceles right triangle is 16 inches. The midpoints of its sides are connected to form an inscribed triangle, and this process is repeated, creating a third triangle inscribed in the previous one. Find the sum of the areas of these triangles if this process is continued infinitely.
General
2 months ago
In some ways, a debit card is more vulnerable to theft than cash or a checkbook. Explain how this is so.
General
2 months ago
20 POINTS!! PLEASE HELP I CAN'T DO THIS ALONE!!!Match the following.real numberwhole numbernatural numberintegerirrational numberrational numberinfiniteincreasing or decreasing without end a number belonging to the set made up of the whole numbers and their opposites a number which, when in decimal form, does not terminate or repeata number belonging to the set made up of the numbers that are used to count: 1, 2, 3, and so ona number which can be written as a ratio in fraction form a number which can be written as an infinite decimal a number belonging to the set made up of zero and the natural numbers
General
2 months ago
A survey was done to determine the effect of students changing answers while taking a multiple-choice test on which there is only one correct answer for each question. Some students erase their initial choice and replace it with another. It turned out that 65% of the changes were from incorrect answers to correct and that 29% were from correct to incorrect. What percent of changes were from incorrect to incorrect?
General
2 months ago
A political interest group wants to determine what fraction p ∈ (0, 1) of the population intends to vote for candidate A in the next election. 1000 randomly chosen individuals are polled. 457 of these indicate that they intend to vote for candidate A. Find the 95% confidence interval for the true fraction p.
General
2 months ago
A positive number is 3 times another number.If we add 2 to the larger and 5 to the smaller, then one of them becomes 2 times the other.Find the smaller number.
General
2 months ago
In a study published in 2007 by the NCBI and National Institutes of Health (NIH) under their OpenMed initiative, researchers wanted to determine if there were "differences between ethnic groups with respect to fetal growth." In particular, were infants of European descent heavier at birth than infants of Chinese descent?a) What hypotheses are they testing?1. H0: μEuro - μChinese = 0 vs. Ha: μEuro - μChinese > 02. H0: pEuro - pChinese = 0 vs. Ha: pEuro - pChinese ≠ 0 3. H0: μD = 0 vs. Ha: μD > 0b) The researchers reported for their test a p-value of 0.001. What should they conclude at α = .05?1.Newborn European infants weigh more, on average, than newborn Chinese infants.2.There is not enough evidence to conclude that newborn European infants weigh more, on average, than newborn Chinese infants. 3.Newborn European infants and newborn Chinese infants do not have significantly different weights.4. Ethnicity and weight at birth are independent.
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2 months ago
Statistics from Cornell's Northeast Regional Climate Center indicate that Ithaca, NY, gets an average of 35.4 inches of rain each year, with a standard deviation of 4.2 inches.During what percentage of years does Ithaca get more than 30 inches of rain?a. approximately 10.03%b. approximately 10.95%c. approximately 90.07%d. approximately 5.82e. approximately 94.18%
General
2 months ago
A population grows exponentially according to the differential equation dP, dt equals k times P , where P is the population, t is time, and k is a positive constant. If P(0) = A, what is the time for the population to quadruple its initial value?
General
2 months ago
A student wanted to estimate the number of chocolate chips in a commercial brand of cookie. He sampled 100 cookies and found an average of 10.5 chips per cookie. If we assume the standard deviation is 8, what is a 99% confidence interval for the average number of chips per cookie?A. (8.4,12.6)B. (8.9,12.1)C. (5.3,10.7)
General
2 months ago
A store manager predicts that 150 blankets will be sold if each blanketcosts $32. The manager predicts that 2 less blankets will be sold for every$1 increase in price. For what prices can the manager predict that at least120 blankets will be sold?
General
2 months ago
Can anyone help me solve this please?
General
2 months ago
find out the answers to this
General
2 months ago
Jean and Fred are making apple crisp. The recipe calls for 8 apples to be peeled and cut into pieces. However, as Fred and Jean work, they eat pieces of apple. Fred eats 2/9 of each apple that he peels, and Jean eats 1/9 of each apple she peels. Assuming they each peel and cut four apples, how many apples will they have left over for the recipe after they peel eight apples?
General
2 months ago
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