What percentage of ACT composite scores are below 31? Recall the following: For the ACT, the mean composite score was 21.0 with a standard deviation of 5.2 A. 23.89 % B. 84.85 % C. 37.45 % D. 97.25 %
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What percentage of ACT composite scores are below 31?
Recall the following:
- For the ACT, the mean composite score was 21.0 with a standard deviation of 5.2
A. 23.89 %
B. 84.85 %
C. 37.45 %
D. 97.25 %
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- t Date Rate 1 1-Apr-04 1.8564 2 2-Apr-04 1.8293 3 5-Apr-04 1.8140 4 6-Apr-04 1.8374 5 7-Apr-04 1.8410 6 8-Apr-04 1.8325 7 9-Apr-04 1.8322 8 12-Apr-04 1.8358 9 13-Apr-04 1.8160 10 14-Apr-04 1.7902 11 15-Apr-04 1.7785 12 16-Apr-04 1.8004 13 19-Apr-04 1.8055 14 20-Apr-04 1.7914 15 21-Apr-04 1.7720 16 22-Apr-04 1.7684 17 23-Apr-04 1.7674 18 26-Apr-04 1.7857 19 27-Apr-04 1.7925 20 28-Apr-04 1.7720 21 29-Apr-04 1.7751 22 30-Apr-04 1.7744 23 3-May-04 1.7720 24 4-May-04 1.7907 25 5-May-04 1.7932 26 6-May-04 1.7941 27 7-May-04 1.7842 28 10-May-04 1.7723 29 11-May-04 1.7544 30 12-May-04 1.7743 31 13-May-04 1.7584 32 14-May-04 1.7572 33 17-May-04 1.7695 34 18-May-04 1.7695 35 19-May-04 1.7827 36 20-May-04 1.7710 37 21-May-04 1.7880 38 24-May-04 1.7908 39 25-May-04 1.8135 40 26-May-04 1.8142 41 27-May-04 1.8369 42 28-May-04 1.8330 (a) Make a line chart and fit an m-period moving average to the exchange rate…This cardiologist gets a report on his patients' sugar consumption from the nutritionist. He becomes concerned that his patients seem to consume even more sugar that what is in a typical American diet. He decides to take a random sample of 100 of his patients and calculate the mean sugar consumption, x̅, of these 100 patients. The mean sugar consumption for these 100 patients is 17.3 teaspoons. Let's assume, for the moment, that his patients are no different than the general population of Americans with µ (daily sugar consumption) = 16.1 teaspoons and σ = 3.5 teaspoons and that his sample of 100 patients is one random sample from this population. What is the probability of obtaining a mean sugar consumption of 17.3 teaspoons (or more) in his sample of 100 patients if his patients are similar to the general population? What is the probability that the average (x̅) is greater than 17.3?A pharmcuticle company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of Mercury) for 9 patients before taking the new drug and 2 hours after taking the drug are shown in the table below. is there enough evidence support the company's claim? Let D =(blood pressure before taking new drug)- (blood pressure after taking new drug).use significant levels of a=their 0.05 for the test. Assume that the systolic blood pressure levels are normally distributed for the population of patience both Before & After taking the new drug. 1.State the null and alternative hypothesis for the test. 2. Find the value of the standard deviation of the paired differences. Round to one decimal place. 3.compute the value of the test statistic. Round to three decimal places 4.determine the decision rule for rejecting the null hypothesis Ho. Round the numerical portion to three decimals. 5.make decision for the hypothesis test.
- The quoted futures price corresponds to a forward rate of 8% per annum with quarterly compounding and actual/360. The parameters for Black’s model are therefore:Fk = 0.08, K=0.08, R=0.075, tk=0.75, SDk=0.15and P(0,tk+1)=e-0.075x1=0.9277 . Use these information to estimate the call price.The U.S. Bureau of the Census prediction for the percentage of the population 65 years and older can be modeled as p(x) = −0.00022x3 + 0.014x2 − 0.0033x + 12.236 percent where x is the number of years since 2000, data from 0 ≤ x ≤ 50. 1. Determine the value of x in the domain 0 ≤ x ≤ 50 for which the percentage is predicted to be increasing most rapidly (Round your answer to three decimal places). 2. Thus, in which year is the percentage is predicted to be increasing most rapidly? 3. Calculate the percentage at that time. (Round your answer to two decimal places.) 4. Calculate the rate of change of the percentage at that time. (Round your answer to three decimal places.)The ---------- of disease represents the rate of occurrence of new cases arising in each period in a specified population.
- The following table shows predicted product demand using your particular forecasting method along with the actual demand that occurred: FORECAST ACTUAL 1,515 1,585 1,415 1,515 1,715 1,615 1,755 1,680 1,805 1,730 Compute the tracking signal using the mean absolute deviation and running sum of forecast errors.. Product X’s demand is normally distributed with mean 150 and standard deviation 50.Product Y’s demand is also normally distributed with a mean of 150 and a standard deviation of 50. The sum of demand for these two products is normally distributed with a meanof 300 and a standard deviation of 50. Which of the following results is most likely? a. Demands for these products are negatively correlated.b. Demands for these products are positively correlated.c. Demands for these products are independent.d. It is not possible to determine with this information the correlation of these products.distributions of both Y1 and Yn are uniform and continuous
- A manufacturing firm, Caleb Corp, produces and sells product in its home (US) market, and in a foreign market. There is inherent risk in the revenues collected from the foreign market due to volatility in the exchange rate. Under a benchmark strategy, all of the production takes place in the home country. The resulting expected profits for Caleb Corp are variable, due to variation in the exchange rate. As an approximation, the firm has estimated profits for five possible ranges of the exchange rate, with profit represented as a lottery, L= (.2, 150; .2, 200; .3, 220; .2,250; .1, 270) The probabilities are estimated probabilities for the different ranges. The outcomes in this lottery are the estimated final profit levels (not changes in profit). (a) Calculate the expected profit if the firm follows this benchmark strategy, i.e., E(L)A manufacturing firm, Caleb Corp, produces and sells product in its home (US) market, and in a foreign market. There is inherent risk in the revenues collected from the foreign market due to volatility in the exchange rate. Under a benchmark strategy, all of the production takes place in the home country. The resulting expected profits for Caleb Corp are variable, due to variation in the exchange rate. As an approximation, the firm has estimated profits for five possible ranges of the exchange rate, with profit represented as a lottery, L= (.2, 150; .2, 200; .3, 220; .2,250; .1, 270) The probabilities are estimated probabilities for the different ranges. The outcomes in this lottery are the estimated final profit levels (not changes in profit). Now suppose the firm can also buy forward contracts on foreign currency to neutralize the effect of the exchange rate on profits. Assume that these provide complete hedging, but that it involves an additional cost, so that following the…Table 1 shows the total amount spent in Malaysia by tourists from Saudi Arabia and Japan from 2010 to 2019. Based on Table 1, at the 0.01 level of significance, can we conclude that tourists from Saudi Arabia spent less than those from Japan. Table 1: Amount spend by tourists from Saudi Arabia and Japan Year Saudi Arabia Jepun 2010 0.7 1.1 2011 0.7 1.1 2012 0.8 1.4 2013 0.8 1.5 2014 1.1 1.8 2015 1.0 1.6 2016 1.3 1.3 2017 1.2 1.2 2018 1.3 1.7 2019 1.4 2.3