As an economics class project, Debbie studied a random sample of 14 stocks. For each of these stocks, she found the cost per share (in dollars) and ranked each of the stocks according to cost. After 3 months, she found the earnings per share for each stock (in dollars). Again, Debbie ranked each of the stocks according to earnings. The way Debbie ranked, higher ranks mean higher cost and higher earnings. The results follow, where x is the rank in cost and y is the rank in earnings. Stock 1 2 3 4 5 6 7 8 9 10 11 12 13 14 x rank 4 12 5 7 8 11 9 13 10 6 2 3 14 1 y rank 9 7 11 14 6 10 12 5 4 3 2 1 13 8 Using a 0.01 level of significance, test the claim that there is a monotone relation, either way, between the ranks of cost and earnings. (a) What is the level of significance? (b) Compute the sample test statistic. (Use 3 decimal places.)

The quantity of dissolved oxygen is a measure of water pollution in lakes, rivers, and streams. Water samples were taken at four different locations in a river in an effort to determine if water pollution varied from location to location. Location I was 500 meters above an industrial plant water discharge point and near the shore. Location II was 200 meters above the discharge point and in midstream. Location III was 50 meters downstream from the discharge point and near the shore. Location IV was 200 meters downstream from the discharge point and in midstream. The following table shows the results. Lower dissolved oxygen readings mean more pollution. Because of the difficulty in getting midstream samples, ecology students collecting the data had fewer of these samples. Use a 10% level of significance. Do we reject or not reject the claim that the quantity of dissolved oxygen does not vary from one location to another? Location I Location II Location III Location IV 7.1 6.6 4.3 4.7 6.7…

You want to estimate how many fish there are in a pond. Suppose you capture 280 fish, tag them, and throw them back into the pond. After a couple of days, you go back to the pond and capture 560 fish, of which 28 are tagged.An estimate for the number of fish in the pond is  fish

Suppose that you have bought a total of 3200 shares of a stock of a particular company. You bought 1400 shares of stock at $17 per share 700 shares of stock at $12 per share and the remaining shares at $22 per share. What is the average price you paid per share of stock?

The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to find out the fraction of people who appear on the list that are actually caught. Step 1 of 2: Suppose a sample of 233 suspected criminals is drawn. Of these people, 72 were captured. Using the data, estimate the proportion of people who were caught after being on the 10 Most Wanted list. Enter your answer as a fraction or a decimal number rounded to three decimal places.   Step 2 of 2: Suppose a sample of 233 suspected criminals is drawn. Of these people, 72 were captured. Using the data, construct the 80% confidence interval for the population proportion of people who are captured after appearing on the 10 Most Wanted list. Round your answers to three decimal places.

The average price of a certain model of piano in 1995 was $18500. In 2012 the average price of the piano was $25900. What is the percentage increase in the average price of the piano

If we have a score of 100 and is 20% of the grade and a score of 89 which is 40%.  What is my grade?

I can't understand why the data is the percentage of surveyed parents.

Ashley needs to make a total of 50 deliveries this week. So far she has completed 37 of them. What percentage of her to Ashley completed?

What is 60.0% of 300 with the line on top of the first zero