1. pH measurements of a chemical solutions have mean 7.5 with standard deviation 0.06. Assuming all pH measurements of this solution have a nearly symmetric/bell-curve distribution. Find the percent (%) of pH measurements reading below 7.5 OR above 7.62.
2. Salaries for senior Civil engineers per year have known mean of 70 K dollars and standard deviation 3 K dollars. Provided that the salaries per year for senior Civil engineers have a nearly symmetric/bell-curve distribution, what percent (%) of Civil engineers have salary between 64 K and 67 K dollars?
1. pH measurements of a chemical solutions have mean 7.5 with standard deviation 0.06. Assuming all...
1. pH measurements of a chemical solutions have mean 7.5 with standard deviation 0.06. Assuming all pH measurements of this solution have a nearly symmetric/bell-curve distribution. Find the percent (%) of pH measurements reading below 7.5 OR above 7.62. 2. Salaries for senior Civil engineers per year have known mean of 70 K dollars and standard deviation 3 K dollars. Provided that the salaries per year for senior Civil engineers have a nearly symmetric/bell-curve distribution, what percent (%) of Civil...
pH measurements of a chemical solutions have mean 6.5 with standard deviation 0.02. Assuming all pH measurements of this solution have a nearly symmetric/bell-curve distribution. Find the percent (%) of pH measurements reading below 6.46 OR above 6.48.
please help me do this pH measurements of a chemical solutions have mean 7.4 with standard deviation 0.01. Assuming all pH measurements of this solution have a nearly symmetric/bel curve distribution. Find the percent (%) of pH measurements reading below 739 OR above 7.4.
please help me do this Salaries for senior Civil engineers per year have known mean of 71 K dollars and standard deviation 3.9 K dollars. Provided that the salaries per year for senior Civil engineers have a nearly symmetric b ell-curve distribution, what percen % of Civil engineers have salary between 671 K and 71 K dollars? Enter a mathematical Points possible: 5 Unlimited attempts. Score on last attempt: 0. Score in gradebook: 0 Message instructor about this question more...
Salaries for senior Civil engineers per year have known mean of 78 K dollars and standard deviation 5 K dollars. Provided that the salaries per year for senior Civil engineers are normally distributed, what's the probability of finding a Civil engineer whose salary is between 83 K and 93 K dollars? Find the answer without using the LSND program. (Write the answer in decimals)
1. Thickness measurements of ancient prehistoric Native American pot shards discovered in a Hopi village are approximately normally distributed, with a mean of 4.2 millimeters (mm) and a standard deviation of 0.6 mm. What percent (%) of ancient prehistoric Native American pot shards discovered in this area has thickness measurement thicker than 5.4. 2. Final exam scores in a Math class with large number of students have mean 150 and standard deviation 7.5. Provided the scores of this Final exam...
1. A type of battery-operated led lights has a known mean lifetime 7.8 hrs with standard deviation 0.4. Assuming that the lifetimes of these led lights have a nearly symmetric/bell-curve distribution, find the percent (%) of these led lights having lifetime between 6.6 and 7.4 hours. 2. According to a medical study, it takes about 45.4 hrs, on average, for Roseola virus to fade away in infected patients (children). Assuming that the fading times of Roseola virus in infected patients...
QUESTION 6 The mean IQ score of all adults is 100, with a standard deviation of 15. Find the percentage of adults with scores between 70 and 130. Assume the data has a bell-shaped distribution. State the answer only and no additional work. Do not state the percent sign and state as a whole number. (Example: do not state 13% or 0.13. Instead state the answer as 13) QUESTION 4 2 po Many firms use on-the-job training to teach their...
scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 11. use the emperical rule to determine the following. b) what percentage of people has an IQ score less than 67 and greater than 133?c) what percentage of people has an IQ score greater than 122?
1) The lengths of pregnancies of humans are normally distributed with a mean of 268 days and a standard deviation of 15 days. Find the probability of a pregnancy lasting less than 250 days. 2) The lengths of pregnancies of humans are normally distributed with a mean of 268 days and a standard deviation of 15 days. Find the probability of a pregnancy lasting more than 300 days. 3) An airline knows from experience that the distribution of the number...