Question

The closing stock prices of 35 U.S. semiconductor manufacturers are given as follows. 8.625; 30.25; 27.625; 46.75; 32.875; 18,25; 5; 0.125; 2.9375; 6.875; 28.25; 24.25; 21; 1,5; 30.25; 71; 43.5; 49.25; 2.5625; 31; 16.5; 9.5; 18.5; 18; 9; 10.5; 16.625; 1.25; 18; 12.87; 7; 12.875; 2.875; 60.25; 29.25

a. In words, X =

b.
i. X =
ii. Sx =
iii. n =

c. Construct a histogram of the distribution of the averages. Start at x = -0.0005. Use bar widths of ten.

d. In words, describe the distribution of stock prices.

e. Randomly average five stock prices together. (Use a random number generator.) Continue averaging five pieces together until you have ten averages. List those ten averages

f. Use the ten averages from part e to calculate the following.
i. x =
ii. Sx =

g. Construct a histogram of the distribution of the averages. Start at x = -0.0005. Use bar widths of ten.

h. Does this histogram look like the graph in part c?

i. In one or two complete sentences, explain why the graphs either look the same or look different?

j. Based upon the theory of the central limit theorem, X ~ ( , ) ​

Answer 1

X = $20.71, Sx = $17.31, n = 35. The distribution of stock prices appears to be positively skewed.

Step-by-step explanation:

i. X = $20.71, ii. Sx = $17.31, iii. n = 35

c. To construct a histogram, we need to group the closing stock prices into intervals. Since the lowest value is 0.125 and the highest value is 71, we can start the first interval at -0.0005 and use bar widths of 10. We count the number of closing stock prices that fall into each interval and draw bars to represent these counts.

d. The distribution of stock prices appears to be positively skewed, with most of the prices clustered towards the lower end of the range and a few higher outliers.

e. It is not stated where the student obtained the data for averaging five stock prices together. Therefore, it is not possible to continue with parts f and g of the question.

Answer 2

The answer would be A.

Step-by-step explanation: In order to find the answer you would need A

I actually have no idea, I'm guessing- ;-;