An investigator with a stock portfolio worth several hundred thousand dollars sued his broker and brokerage firm because he felt that lack of diversification in his portfolio led to poor performance for many years in a row. In an effort to avoid close public scrutiny, the firm agreed to settle the conflict by an arbitration panel. The arbitration panel compared a sample of 39 months of the investor's returns with the average of the Standard & Poor's 500-stock index for the same period in order to determine whether there was a substantial decrease. Historically, the S&P has a mean return of 0.95. Their data is shown below. Suppose you are a member of this arbitration panel. Construct a 95% confidence interval for the true mean return of the investor's portfolio. Find the margin of error for the 95% confidence interval for the true mean return of the investor's portfolio. (Round all to 3 decimal places.)

a. What is the lower bound of your confidence level?

b. What is the upper bound of your confidence level?

c. Is the alternative hypothesis one tailed or two?

d. What is the t-score for this test?

e. What is the p-value for this test?

Data: -8.63 6.82 -9.16 -.65 -2.14 1.63 -2.35 -1.25 4.34 -1.01 -2.27 -3.58 -1.22 12.22 -1.41 -2.93 6.13 -10.27 -7.21 12.03 -2.70 7.00 -5.11 -.09 -2.56 -2.93 -15.25 -.80 7.34 4.33 -9.14 -8.66 -1.44 5.04 2.35 -2.64 -1.03 1.28 -7.24

42%

step-by-step explanation:

we know,

total people = 60

total males = 25

percentage of males

= 25/60 × 100

= 25/6 × 10

= 25/3 × 5

= 125 / 3

= 41.

rounding of = 42%

happy to

pls mark as brainliest

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v