Butane is burned with air. No CO is present in the combustion products. Perform a DOF analysis to prove that the molar composition of the product gas can be determined if the percentage excess air and the percentage conversion of butane are specified

A study reports that 36​% of companies in Country A have three or more female board directors. Suppose you select a random sample of 100 respondents.

c. The probability is 95​% that the sample percentage of Country A companies having three or more female board directors will be contained within what symmetrical limits of the population​ percentage? The probability is 95​% that the sample percentage will be contained above nothing​% and below nothing​%. ​(Round to one decimal place as​ needed.)

A study reports that 36​% of companies in Country A have three or more female board directors. Suppose you select a random sample of 100 respondents.

c. The probability is 95​% that the sample percentage of Country A companies having three or more female board directors will be contained within what symmetrical limits of the population​ percentage? The probability is 95​% that the sample percentage will be contained above nothing​% and below nothing​%. ​(Round to one decimal place as​ needed.)

You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you​ survey ? Assume that a prior survey suggests that about 53​% of air passengers prefer an aisle seat. Assume that you want to be 90% confident that the sample percentage is within 4.5 percentage points of the true population percentage. Round the answer to the nearest large whole number!

A programmer plans to develop a new software system. In planning for the operating system that he will​ use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 95​% confident that his estimate is in error by no more than five percentage points question marks? Complete parts​ (a) through​ (c) below. ​a) Assume that nothing is known about the percentage of computers with new operating systems.

The annual rainfall in a certain region is approximately normally distributed with mean 42.6 inches and standard deviation 5.8 inches. Round answers to the nearest tenth of a percent. a) What percentage of years will have an annual rainfall of less than 44 inches? % b) What percentage of years will have an annual rainfall of more than 40 inches? % c) What percentage of years will have an annual rainfall of between 38 inches and 43 inches?

Scores of an IQ test have a​ bell-shaped distribution with a mean of 100 and a standard deviation of 19. Use the empirical rule to determine the following. ​(a) What percentage of people has an IQ score between 62 and 138​? ​(b) What percentage of people has an IQ score less than 43 or greater than 157​? ​(c) What percentage of people has an IQ score greater than 138​? ​(a) 95​% ​(Type an integer or a​ decimal.)

The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of 246.3 and a standard deviation of 60.3. ​(All units are 1000 ​cells/mu​L.) Using the empirical​ rule, find each approximate percentage below. a. What is the approximate percentage of women with platelet counts within 3 standard deviations of the​ mean, or between 65.4 and 427.2​? b. What is the approximate percentage of women with platelet counts between 125.7 and 366.9​?

The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of

246.8246.8

and a standard deviation of

64.864.8.

​(All units are 1000

​cells/muμ​L.)

Using the empirical​ rule, find each approximate percentage below.

The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of

260.9260.9

and a standard deviation of

65.465.4.

​(All units are 1000

​cells/muμ​L.)

Using the empirical​ rule, find each approximate percentage below.