The mean lifetime of a certain tire is 30,000 miles and the standard deviation is 2500 miles. If we assume nothing about the shape of the distribution, approximately what percentage of all...

The mean lifetime of a certain tire is 30,000 miles and the standard deviation is 2500 miles. If we assume nothing about the shape of the distribution, approximately what percentage of all...

The distribution of the weights of 100 students has a mean of 168lbs with a standard deviation of 16lbs. Predict the number of students who have weights between 135 and 175 pounds.

Statistics thank you please

A small engine shop receives an average of 1.51 repair calls per per spur, with a standard deviation of 0.37. What is the standard deviation of the number of calls they receive during six...

MEAN : 6.3 MODE:6 MEDIAN:6 STUDENTS SCORES: 4,5,5,6,6,6,7,7,8,9 STANDARD DEVIATION: 1.49

how would you find the standard deviation of the net income?

country a annual exports to country b are $3.2bilion on average with standard deviation of 0.28 billion. country a annual imports to country b are $3.5 bilion on average with standard deviation...

mean 6.3 standard deviation 1.49 students scores: 4,5,5,6,6,6,7,7,8,9

Light vehicles sold in a country must emit an average of no more than 0.11 grams per mile (g/mi) of nitrogen oxides (NOX) after 50,000 or fewer miles of driving. NOX emissions after 50,000 or fewer...

A small engine shop receives an average of 1.51 repair calls per hour, with a standard deviation of 0.37. What is the standard deviation of the number of calls they receive during six hour...

In a large class of 500 students, the mean and standard deviation of a final exam are 65 and 11, respectively If the grades have symmetric distribution, how many students have grades within 2...

Assume that adults have iq scores that are normally distributed with a mean of 100 and a standard deviation of 15 .

Full question-----> Suppose that the breathing rates for college-age students have a mound-shaped distribution, with a mean equal to 16 and standard deviation of 1.5 breaths per minute. What...

In a large class of 500 students, the mean and standard deviation of a final exam are 65 and 11, respectively If the grades distribution is not symmetric at least how many students have grade...

Compare and contrast the following measures of dispersion (range, standard deviation) in terms of what each of these represent and in terms of the relative advantages/disadvantage of using one over...

If female blood pressure is normally distributed with a mean of 114 and standard deviation of 19.8, find p12 and p77

The population of current statistics students has ages with mean μ and standard deviation σ. Samples of statistics students are randomly selected so that there are exactly 38 students in each sample...

billy has 15 min to get to his after-school job. Despite his best efforts, he is frequently late. His employer says that unless he arrives to work on time consistently, he will lose his job. He has...

Calculate the mean and standard deviation for the set of numbers {11,16, 20,17}

2.8, 3, 3.7, 4.3, 3.2, 2.9 What is the mean and the standard deviation?