# 2. To make observations, an observer must always use (1)experiments (2)the senses (3)proportion (4)mathematical calculations Is it (2)?

36,003 results
1. ## science

ok this is juist the first question.... 1)When evolution was first proposed, which of the following was used as evidence to support the idea? A)observations of nature B)laboratory experiments C)extensive fossil collections D)genetic sequences plzz help!!!!

2. ## Science

1. What is the difference between a scientific theory and a scientific law? A) A scientific theory describes a pattern of observations, while a scientific law is an educated guess based on observation. B) A scientific theory is based on a few experiments,

3. ## Math

How can you use theoretical probability to make predictions in real-world situations? Complete the statement. You can find the theoretical probability of an event and then use it to make a prediction by setting up a IS THIS CORRECT? My answer: A.

4. ## Physics

A woman is 1.6 m tall and has a mass of 53 kg. She moves past an observer with the direction of the motion parallel to her height. The observer measures her relativistic momentum to have a magnitude of 2.6 x 1011 kg·m/s. What does the observer measure for

5. ## Science

1. The senses are used to make which of the following? (1 point.) inferences predictions evaluations observations*****

6. ## Engineering

6. classical mechanics depends heavily on A. quantum leaps B. ancient theories C. general observations * D. mathematical solutions 7. a virus is a parasite because A. it hunts its prey * B. it only impacts plants C. it lives of other organisms D. it is the

7. ## science (check plz)

1)When evolution was first proposed, which of the following was used as evidence to support the idea? A)observations of nature B)laboratory experiments C)extensive fossil collections*** D)genetic sequences

8. ## Statistics

Standard Normanl Drill: A. Find the number z such that the proportion of observations that are less than z in a standard Normal distribution is 0.8. B. Find the number z such that 35% of all observations from a standard Normal distribution are greater than

9. ## science

Define inductive reasoning. answering questions by analyzing specific observations and using them to come to a more general understanding doubting or not accepting conclusions or ideas until they have been adequately tested and verified answering questions

10. ## Calculus (math)

A painting in an art gallery has height h and is hung so its lower edge is a distance d above the eye of an observer. How far from the wall should the observer stand to get the best view? (In other words, where should the observer stand so as to maximize

11. ## Statistics

1) A sample of 49 observations is taken from a normal population. The sample mean is 55 and the sample standard deviation is 10. Determine the 99% confidence interval for the population mean. 2) The Fox TV network is considering replacing one of its

12. ## science 1 question

When evolution was first proposed, which of the following was used as evidence to support the idea? A)observations of nature B)laboratory experiments C)extensive fossil collections D)genetic sequences Is it A or C??? I'm very torn between the two. pls help

Please help me with the following: Briefly explain why experiments having faulty design or inconsistent data are problems for scientists. List several reasons. There are several reasons that experiments with faulty designs or with inconsistent data are

14. ## Science

What is the difference between a scientific theory and a scientific law? A. A scientific theory describes a pattern of observations, while a scientific law is an educated guess based on observation. B. A scientific theory is based on a few experiments,

15. ## Earth Science

2. To make observations, an observer must always use (1)experiments (2)the senses (3)proportion (4)mathematical calculations Is it (2)?

16. ## Maths

From a set of 1000 observations known to be normally distributed, the mean is 534 cm and SD is 13.5 cm. How many observations are likely to exceed 561 cm? How many will be between 520.5 cm and 547.5 cm? Between what limits will the middle 50% of the

17. ## statistics

According to a 2009 Reader's Digest article, people throw away approximately 10% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 78 grocery shoppers to investigate their behavior. What is the

18. ## Physics Help ASAP

A car horn is pitched at 520 Hz. The car travels along a straight road at a speed of 25 m/s. towards an observer walking at 2 m/. The speed of sound is 334 m/s. Calculate the frequency heard by the observer when: (a) the car is moving towards the observer

19. ## science

when you use a graph to solve a problem about how far a car traveled during a specified time during which it was accelerating how many area calculations do you have to make? what is/ are the shape/shapes you are calculating? a. one area calculation, a

20. ## Help: biology

1. You have in front of you three vials containing a clear liquid. You are told that each vial contains one of the following carbohydrates: Fructose, Sucrose, Amylose. What experiments could you carry out to determine the composition of each vial. What

21. ## Physics

A skyrocket explodes 77 m above the ground. Three observers are spaced 106 m apart, with observer A directly under the point of the explosion. Find the ratio of the sound intensity heard by observer A to that heard by observer B. Find the ratio of the

22. ## Math

What proportion of observations from the standard normal distribution are greater that 2.88?

23. ## Literature

I don't quite get what they mean by senses... Here is their question, it's based on a poem named 'The Village Blacksmith'. You can experience a poem more fully if you use your senses. What sense is the blacksmith using in lines 28 and 29? The lines: 28] He

24. ## Physics

Two speakers are 2m apart. An observer is 3m Infront of one speaker. a) if both are driven by a single oscillator at 300Hz, what is the phase difference at the observer b) what is the frequency closest to 300Hz for which the observer hear minimal sound?

25. ## physics

A woman is 1.6 m tall and has a mass of 47 kg. She moves past an observer with the direction of the motion parallel to her height. The observer measures her relativistic momentum to have a magnitude of 2.2 × 1010 kg·m/s. What does the observer measure

26. ## calc

a mathematical consultant determines that the proportion of people who will have responded to the advertisement of a new product after it has been marketed for t days is given by f(t)=0.9(1-e^-0.3t). a) if the add in on the air for 60 days, when will the

27. ## Science

The founder of glaciology, Louis Agassiz, formed a hypothesis that continents were once covered in glaciers based on what information? A Data collected from his experiments B Observations of his peers C Increase in sea levels D The amount of glaciers

28. ## Physics

An object, with mass 55 kg and speed 19 m/s relative to an observer, explodes into two pieces, one 2 times as massive as the other; the explosion takes place in deep space. The less massive piece stops relative to the observer. How much kinetic energy is

29. ## Science

a few questions; 11 letters. observations involving verbal descriptions. 20 letters. the last one being t. an experiment where only one variable is changed and all others are kept constant. 16 letters. the first being s, the fourteenth being h. An

30. ## science

Define inductive reasoning. using general theories or principals to make predictions about more specific situations doubting or not accepting conclusions or ideas until they have been adequately tested and verified A? answering questions based on what can

31. ## social studies

After the Scientific Revolution, scientists no longer made their ideas about science fit? 1) the results of their experiments 2) the teachings of the church 3)their observations in nature 4)their political beliefs I think #2 Thanks

32. ## statistics

find the number z such that the proportion of observations are less than z in a standard normal distribution is 0.8

33. ## Maths

If the mean of 45 observations is 49. If 3 is added to 10 observations and 5 is subtracted from other 10 observations. Find the new mean. Very urgent

34. ## calculus

An airplane is cruising at 340 km/h at an altitude of 4000 m. If the plane passes directly over an observer on the ground, how fast is the distance from the plane to the observer changing when it is 3000 m away from the point directly above the observer?

35. ## physics

The velocity of sound in the atmosphere is c=300 m/s. An airplane is traveling with velocity v=600 m/s at an altitude of h=8 km over an observer. How far horizontally past the observer in kilometers will the plane be when the observer first hears the noise

36. ## Physics

Two speakers are 2m apart. An observer is 3m Infront of one speaker. a) if both are driven by a single oscillator at 300Hz, what is the phase difference at the observer b) what is the frequency closest to 300Hz for which the observer hear minimal

37. ## math

The distance d in Km to the gorizon can be estomated using the formula d= rootover13h, where h is the height above ground level, in meters of the observer. a)use the formula to find the distance to the horizon for an observer on the london eye, 135m above

38. ## Mathamatics

A botanist is a person who studies plants. Mr. Moss is a botanist who is studying a type of bamboo that can grow 1.2 to 3.9 inches every twenty-four hours. Mr. Moss has two pots with a stem of bamboo in each pot. Each stem of bamboo is four feet in height.

39. ## College Physics 2

An unstable particle called Bullroarium has a lifetime of 6x10E-10 seconds, measured at rest. If a Bullroariom particle zips past a stationary observer at 0.67c , find the stationary observer’s measurements for A.) Bullroarium lifetime as measured by the

40. ## statistics

Dr. Snyder teaches a large introductory statistics course. In the past, the proportion of students that receive a grade of A is 0.20. The proportion that receives a B is 0.30. The proportion that receives a C is 0.30. The proportion that receives a D is

41. ## Quick chemistry help

The primary purpose of the scientific method is to A. Solve problems B. Design experiments C. Make observations D. Publish theories Is it c?

42. ## physics

to an observer the pitch of the stationary source of the sound appears to be reduced by 20% if speed of sound is 340m/s then sped and direction of 5he observer is options 1.68 m/s away from the observer 2.96 m/s away from the observer

43. ## PS

Does it look to you like Aristotle ever performed any actual experiments with falling objects? Explain your answer, based upon your observations from this lab .

44. ## Ms. Sue PLZ HELP!!!(science)

When evolution was first proposed, which of the following was used as evidence to support the idea? A. observations of nature *** B. laboratory experiments C. extensive fossil collections D. genetic sequences

45. ## History

When evolution was first proposed, which of the following was used as evidence to support the idea? A. observations of nature B. laboratory experiments C. extensive fossil collections D. genetic sequences

46. ## Science

PLEASE DO NOT THINK I AM CHEATING AND ASKING FOR ANSWERS. DO NOT LECTURE ME, I AM SIMPLY ASKING WHAT IN THE HELL THIS MEANS: Collecting and Analyzing Data There are two types of observations: qualitative and quantitative. Qualitative observations use words

47. ## Math

If I have 4 triangles and 6 circles, what is a proportion that I can make? If I have 8 hearts and 10 diamonds, what is a proportion I can make?

48. ## statistics

Find the number z that satisfies the proportion of the observations in a standard normal distribution less than z is 30%?

49. ## mba

from a set of 1000 observations known to be normally distributed the mean is 534 cm and sd is 13.5 cm. how many observations are likely to exceed 561 cm, how many will be between 520.5 cm 547.5 cm, between what limits will the middle 50% of the

50. ## maths

3. From a set of 1000 observations known to be normally distributed, the mean is 534 cm and SD is 13.5 cm. How many observations are likely to exceed 561 cm? How many will be between 520.5 cm and 547.5 cm? Between what limits will the middle 50% of the

51. ## mba

from a set of 1000 observations known to be normally distributed the mean is 534 cm and sd is 13.5 cm. how many observations are likely to exceed 561 cm, how many will be between 520.5 cm 547.5 cm, between what limits will the middle 50% of the

52. ## physics

An observer detects an apparent frequency of 505 hz coming from a 500 hz source. Which is true? a. the observer is moving due east, away from the stationary source b. the source is moving due west, away from the stationary observer c. the souce and the

53. ## Related Rates

(A poignant problem) A 3-foot-tall observer holds a balloon 1 foot in front of her face. Experimentally, the observer releases the balloon and watches as it rises vertically at 5 feet per second. 2 seconds after releasing the the balloon, the observer

54. ## physics(relativity)

A boy runs a 100m distance in 20s as measured by an observer on earth.how long does it take according to an observer in space ship moving with speed of 0.98c for the boy to complete the run? What is the length of the track according to the moving observer

55. ## physics

An observer measures the length of an object. In which of the following cases is the measured length at a minimum? Choose one answer. a. The observer and the object move with the same speed v in the same direction. b. The observer and the object move with

56. ## Mathamatics

A botanist is a person who studies plants. Mr. Moss is a botanist who is studying a type of bamboo that can grow 1.2 to 3.9 inches every twenty-four hours. Mr. Moss has two pots with a stem of bamboo in each pot. Each stem of bamboo is four feet in height.

57. ## Calculus (math)

A painting in an art gallery has height h and is hung so its lower edge is a distance d above the eye of an observer (as in the figure). How far from the wall should the observer stand to get the best view? (In other words, where should the observer stand

58. ## Science

the senses are to make which of the following? A. Inferences B. Predictions C. Evaluations D. Observations

what this the answer for this question We can conclude from paragraph a)theories are often revised. b)theories are never modified. c)theories are always changed. d)theories are mostly illogical. The concept that the Earth is a sphere can be traced back

60. ## Chemistry lab reports online?

Are there any websites with other students' lab reports with calculations online? I do not want to copy and am completely against plagiarism. I just want to look at others' examples to help in giving me ideas on how to write my own and make sure I have

61. ## psychology

My instructor assign me of one the "senses." This the one my instructor had assign to me= “The Skin Senses”: Which includes Touch, Pressure, Temperature, and Pain. The instruction is to (Briefly describe how The Skin Senses work and its importance.

62. ## science

Define inductive reasoning. using general theories or principals to make predictions about more specific situations answering questions by analyzing specific observations and using them to come to a more general understanding doubting or not accepting

63. ## Science

When evolution was first proposed, which of the following was used as evidence to support the idea? 1.observations of nature 2.laboratory experiments 3.extensive fossil collections 4.genetic sequences I think its either 1 or 4

64. ## science

When evolution was first proposed, wich of the following was used as evidence to support the idea. A.**observations of nature** B. Laboratory experiments C.extensive fossil collections D. genetic sequences

65. ## Math

The null and alternate hypotheses are: H0: π1 ≤ π2 H1: π1> π2 A sample of 100 observations from the first population indicated that X1 is 70. A sample of 150 observations from the second population revealed X2 to be 90. Use the .05 significance level

66. ## Statistics

What statistical assumptions need to be validated for ANOVA results to be valid? a. observations are from an F-distribution b. Observations are from a Chi square distribution c. Observations are normally distributes, independent, a variances are equal d.

67. ## mba

from a set of 1000 observations known to be normally distributed the mean is 534 cm and sd is 13.5 cm. how many observations are likely to exceed 561 cm, how many will be between 520.5 cm 547.5 cm, between what limits will the middle 50% of the

68. ## mba

from a set of 1000 observations known to be normally distributed the mean is 534 cm and sd is 13.5 cm. how many observations are likely to exceed 561 cm, how many will be between 520.5 cm 547.5 cm, between what limits will the middle 50% of the

69. ## Physics

A long wire that carries a current is bent into a solenoid with upward current in the front looking. If the observer could "see" the magnetic field inside this arrangement of solenoid from the right side, how would it appear? a) The observer would "see" a

70. ## phys

An observer detects an apparent frequency of 505 hz coming from a 500 hz source. Which is true? a. the observer is moving due east, away from the stationary source b. the source is moving due west, away from the stationary observer c. the souce and the

71. ## Statistics

Find the number x such that the proportion of observations that are less than x in a Normal distribution with mean 100 and standard deviation 25 is 0.3. (Use 2 decimal places.)

72. ## Science

The senses are used to make which of the following?

73. ## English Expressions

1. Curiosity and concentration are important components in memorizing items. If you have a strong desire to learn and memorize, you can memorize it better. 2. Bisarre association is important. If you want to memorize two items together using association,

74. ## Physics

For a physics lab involving watchnig a gldier move down an air track with uniform acceleration, and recording the results in a table then graphing the results,do I include that "Observations were held and results were recorded in a table. Two graphs, one

75. ## English

Pls, Help! In 200-250 words, describe the picture as an outside observer, or as someone (seen or unseen) in the photo Must Include: at least one detail for each of the 5 senses (sight, sound, smell, taste, touch) one simile (compares two unlike things

76. ## science

A boy runs a 100meter distance race in 20seconds as measured by an observer on earth.how long does it take according to an observer in space ship moving with speed of 0.98c for the boy to complete the run? What is the length of the track according to the

77. ## Research and Evaluation

1) A sample of 49 observations is taken from a normal population. The sample mean is 55 and the sample standard deviation is 10. Determine the 99% confidence interval for the population mean. 2) The Fox TV network is considering replacing one of its

78. ## Re: Plant biology

I'm doing a writing assignment on plant stress physiology. The stress that I chose to research was heat stress. One of the things that I have to do is describe at least 3 experiments that I plan to perform (hypothetically speaking, of course). At least one

79. ## plant biology

I'm doing a writing assignment on plant stress physiology. The stress that I chose to research was heat stress. One of the things that I have to do is describe at least 3 experiments that I plan to perform (hypothetically speaking, of course). At least one

80. ## Stats

Find the number z (± 0.01) such that the proportion of observations that are less than z in a standard Normal distribution is 0.8 Find the number z (± 0.01) such that 59% of all observations from a standard Normal distribution are greater than z

81. ## Mathamatics

The distanceãd in kilometres to the horizon can be estimated using the formula d = 13h,where h is the height above ground level, in metres, of the observer. (a) Use the formula to find the distance to the horizon for an observer on the London Eye, 135m

82. ## Physics

When Using A Graph To Solve A Problem About How Far A Car Traveled During Specified Time During Which It Was Accelerating, How Many Area Calculations Do You Have To Make? What Is/are The Shape/shapes You Are Calculating? ( I believe the answer is D) A. One

83. ## Earth Science

What are FIVE tools that we use to help us extend our senses when making quantitative observations?

When studying the world of living things, biologists and other scientists use the scientific process. Observtions along with precious data are used to formulate a hypothesis. New observations and or experiments are carried out in order to test the

85. ## Science

Hypotheses can be rejected or supported by experiments, or, in some instances, new observations. i think it's true

86. ## science

Define inductive reasoning. using general theories or principals to make predictions about more specific situations doubting or not accepting conclusions or ideas until they have been adequately tested and verified answering questions based on what can be

87. ## Science

What are some observations about water? Such as the Different Perceptions from what you see. Included all your senses. I am Very Confused on how to write an observation for water? Please and thankyou i believe its cold water.

88. ## Science

When evolution was first proposed, which of the following was used as evidence to support the idea? 1.observations of nature 2.laboratory experiments 3.extensive fossil collections 4.genetic sequences 1.?

89. ## Statistics

a. In a random sample of 500 observations , we found the proportion of successes to be 48%. Estimate with 95% confidence the population proportion of successes. B. Repeat part (a) with N=200 C. Repeat part (a) with N=1000 I need to know how to do this in

90. ## statistics

N(0,7.6) Find the proportion of observations that are between -10 and 10. please show your steps

91. ## Marine Science

Can someone please help me with the senses of a bluefin tuna? I just need a few sentences describing their senses. Like hearing, feeling, taste, smell, and sight. Thanks!

92. ## Science

Can you get results from observations? Can you still get results from doing only small amounts of experiments?

93. ## Math

Five number summary: 4.33, 5.05, 5.44. 5.79, 6.81 mean pH: 5.43 standard deviation: 0.54 Given the proportion of observations are within 68%, 95%, and 99.7%, what is the acidity of the rainfall in pH value?

94. ## HISTOTY

Match the following statement to the person: One should begin with careful observations of facts and experiments on nature, and then should form general conclusions only when they were fully justified. A. Plato B. Bacon C. Descartes D. Aristotle MY ANSWER

95. ## Physics

a siren has a frequency of 1099 Hz when it and an observer are both at rest. The observer then starts to move and finds that the frequency he hears is 1185 Hz. What is the speed of the observer?

96. ## PHYSICS

A woman is 1.6 m tall and has a mass of 47 kg. She moves past an observer with the direction of the motion parallel to her height. The observer measures her relativistic momentum to have a magnitude of 2.2 × 1010 kg·m/s. What does the observer measure

97. ## Calculus

An observer 150 feet from point C, where a weather balloon has been released. The balloon rises vertically at a rate of 8ft/sec/. At the very instant the balloon is 250 above ground how far is it from the observer? How Quickly is it moving away from the

98. ## mathemathics

an observer and a tree are standing against a slope. the observer is 80m from the tree.the angle between the slope, from the feet of the observer,and thetop of the tree is 14 degree.the slope makes an angle of 9 degree with the horizontal. solve the

99. ## math

To find a sales tax of 6% on a purchase of \$90.00 using the proportion method you would write the following: 6/100 = ST/\$90 The calculations in this problem would give you the following: (ST)= \$540.00

100. ## Mathamatics

The distance d in kilometres to the horizon can be estimated using the formula d = root13h,where h is the height above ground level, in metres, of the observer. (a) Use the formula to find the distance to the horizon for an observer on the London Eye, 135m