For problems 30 to 32, refer to the following: The price-earnings ratio for 19stocks in the retail trade category are: 8.6, 9.9, 9.8, 9.4, 9.1, 11.5, 8.0, 10.4, 10.2,11.1, 10.5, 8.3, 8.7, 8.4, 11.9, 9.9, 9.1, 8.3, 10.730. How many observations fall above the 7th decile of the price-earnings ratio?O A. 5В. 6O C.7O D. 831. What is the first quartile value of the price-earnings ratio?O A. 8.3B. 8.65O C. 10.45O D. 11.1832. How many observations fall below the 1st quartile value of the price-earningsratio?A. 5В. 6O C.7D. 8O OO OO O

Here given 19 data of price earning ratio...arrange given data in ascending order further steps are…

Answered: 30. How many observations fall above…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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12. How would your approximation of the actual mean and actual standard deviation change if you would have randomly selected 10 drivers instead of 5? Explain.
If the distribution of hate crimes was normally distributed, we would expect 68 percent of the data points to be within 1 standard deviations of the mean? 6. What percent of your 12 data points fall within u – o to µ + o (In other words 1 SD on both sides of your mean)? You will need to count how many of the 12 data -- points fall within these two values, then divide by 12. % Give answer as a percent. 7. Get u 20 (The mean 2* the standard deviation: Two SD below the mean) 8. Get u + 20 (the mean + 2* the standard deviation: Two SD above the mean) If the distribution of hate crimes was normally distributed, we would expect 95 percent of the data points to be within 2 standard deviations of the mean? 9. What percent of your 12 data points fall within u 2σ to μ +2σ (In other words Give answer as a 2 SD on both sides of your mean)? percent.
I need the answer quickly
It is assumed that the average Triglycerides level in a healthy person is 130 unit. In a sample of 20 patients, the sample mean of Triglycerides level is 125 and the sample standard deviation is 20. Calculate the test statistic value. OA.--0.45 О В.. 1.34 ОС...- 1.12 O D... 1.79 O E. No correct answer
9. [20 pts] A drug company has developed a new drug that is designed to reduce high blood pressure. To test the drug, a sample of 15 patients is recruited to take the drug. Their SBP are reduced by an average of 28.3 millimeters, with a standard deviation of 12.0 millimeters. In addition, another sample of 20 patients takes a standard drug. The blood pressure in this group are reduced by an average of 17.1 millimeters with a standard deviation of 9.0 millimeters. Assume that blood pressure reductions are approximately normally distributed with equal variances. Test the new drug is better than the standard drug. Use the a = 0.05. (a) Họ: (b) Hạ: (c) Test Statistic:
Weights of female cats of a certain breed are normally distributed with mean 4.1 kg and standard deviation 0.6 kg. (i). What proportion of female cats have weights between 3.7 and 4.4 kg? . (ii). A certain female cat has a weight that is 0.5 standard deviations above the mean. What proportion of female cats are heavier than this one?. (iii). How heavy is a female cat whose weight is on the 80th percentile?. (iv). A female cat is chosen at random. What is the probability that she weighs more than 4.5 kg? . (v). Five female cats are chosen at random. What is the probability that exactly one of them weighs more than 4.5 kg? .
For the first half of a baseball season, a player had 85 hits out of 270 times at bat. The player's batting average was 85 270 ≈ 0.315. During the second half of the season, the player had 56 hits out of 275 times at bat. The player's batting average was 56 275 ≈ 0.204. (Round your answers to three decimal places.) (a) What is the average (mean) of 0.315 and 0.204?(b) What is the player's batting average for the complete season?(c) Does the answer in part (a) equal the average in part (b)? YesNo
needs to be rounded as well to nearest tenth or hundreth
I ended up with 2.28 and 3.85 and they are both wrong how do I correctly solve this problem?

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