Questions
A government agency is putting a large project out for low bid. Bids are expected from...

A government agency is putting a large project out for low bid. Bids are expected from 10 different contractors and will have a normal distribution with a mean of $3.5 million and a standard deviation of $0.25 million. Devise and implement a sampling experiment for estimating the distribution of the of the minimum bid and the expected value of the minimum bid. what is the average minimum bid in millions that you found?

In: Statistics and Probability

Consider a binomial experiment with n=13 and p=0.3 a. Compute f(0) (to 4 decimals). b. Compute...

Consider a binomial experiment with n=13 and p=0.3

a. Compute f(0) (to 4 decimals).

b. Compute f(8) (to 4 decimals).

c. Compute P(x<=2) (to 4 decimals).

d. Compute P(x>=4) (to 4 decimals).

e. Compute E(x) (to 1 decimal).

f. Compute Var(x) and ó.

In: Statistics and Probability

Iwhen performing the experiment for magnesium oxide : Why is the empty crucible and cover fired...

Iwhen performing the experiment for magnesium oxide :

Why is the empty crucible and cover fired to heat?

How critical are the suggested times for heating and cooling?

How can you tell when the magnesium metal has reacted cmpletely?

How cn you tell when the copper wire has reacted compleely?

What are the major sources of experimental error?

In: Chemistry

Experiment shows that the reaction 6I−(aq) + BrO3 −(aq) + 6H+(aq) ⟶ 3I2 (aq) + Br−(aq)...

Experiment shows that the reaction 6I−(aq) + BrO3 −(aq) + 6H+(aq) ⟶ 3I2 (aq) + Br−(aq) + 3H2O(l) obeys this rate law: rate = k[I- ][BrO3 ][H+] 2 .

(a) What is the reaction order in each reactant and the overall reaction order?

(b)By what factor does the rate change if [I−] and [BrO3 −] are tripled and [H+] is doubled?

In: Chemistry

(A) Discuss the probability of landing on heads if you flipped a coin 10 times? (B)...

(A) Discuss the probability of landing on heads if you flipped a coin 10 times?

(B) What is the probability the coin will land on heads on each of the 10 coin flips?

(C) Apply this same binomial experiment to a different real-world situation. Describe a situation involving probability?

please explain each and show work. showing the steps to the answer would be great..

In: Math

Your friend gives you their special plant food and claims it will make your plant grow...

Your friend gives you their special plant food and claims it will make your plant grow much faster than water alone does.

Describe a simple experiment you can do to test the hypothesis that "special plant food will make plants grow faster". You have two plants, water, the special plant food and a measuring stick.

In: Biology

Problem 2. In diffraction experiments involving multiple wavelengths of light passing through the same aperture, the...

Problem 2. In diffraction experiments involving multiple wavelengths of light passing through the same aperture, the higher order maxima of one wavelength can coincide with a lower order maxima of a longer wavelength. In the above diffraction experiment, the 3rd maxima of 600 nm light is found to coincide with the 4th maxima of a different wavelength of light. What is the other wavelength?

In: Physics

1) what is a diffraction grating 2) why do we use "discharge tube" to perform the...

1) what is a diffraction grating

2) why do we use "discharge tube" to perform the experiment instead of a light bulb

3)If "d " is the grating constant (spacing in between two slits on a grating), hoe can we obtain the ruling (number of grooves per meter) "D"?

4) Define " order of diffraction" and illustrate it using a drawing

In: Physics

Describe an experiment to determine if a resistor models ohms law. (i) Draw a diagram of...

Describe an experiment to determine if a resistor models ohms law.

(i) Draw a diagram of the experimental setup. Label all the measured quantities and draw or state what equipment is used.

(ii) Describe the overall procedure including any necessary steps to reduce experimental uncertainty. It should be thorough enough so that another lab student can follow the directions.

In: Physics

In a Young's double-slit experiment the wavelength of light used is 469 nm (in vacuum), and...

In a Young's double-slit experiment the wavelength of light used is 469 nm (in vacuum), and the separation between the slits is 2.1 × 10-6 m. Determine the angle that locates (a) the dark fringe for which m = 0, (b) the bright fringe for which m = 1, (c) the dark fringe for which m = 1, and (d) the bright fringe for which m = 2.

In: Physics