intervals calculator

When a 95% confidence interval is calculated instead of a 90% confidence interval with the same sample, the maximum error of estimate will be _____ . => either smaller or larger depending on sample size or the same or smaller or larger..

For a sample mean of 35.3, and a given standard deviation the 95% confidence interval for a population mean was calculated as 33.894 < μ < 36.316. Which is the correct representation after rounding the values? => 33.894 < μ < 36.316 or 33.89 < μ < 36.3..

95% confidence interval of a population mean with a sample size of 18 was found out as 6.17 < μ < 6.99. Another study calculated the 95% confidence interval as 5.71 < μ < 7.46. Which among the following can be the possible sample size of the second st..

Which of the statement(s) are not true about degrees of freedom? I. The term "degrees of freedom" is used to describe the number of values in the final calculation of a statistic that are free to vary. II. The degrees of freedom decrease when we have to estimate more parameters. III. The ..

A reaction is carried out at two different initial concentrations of a reactant [A], that is [A] 0 , 1 and [A] 0 , 2 and the respective t 1 / 2 values (t 1 / 2 ) and (t 1 / 2 ) 2 are obtained. The order of the reaction can be calculated as follows: ..

The average rate of reaction is calculated by determining the difference in [O 2 ] concentration over different intervals of time and dividing the difference by D t, From the example, it is obvious that the average rate of reaction decreases with time. Within the time ..

This method is used for reactions where more than one reactant species are involved. Initial rates of the reaction are determined by varying the concentration of only one reactant while keeping the concentrations of other reactants constant. Initial rate of reaction corresponds to the rate at the s..

The velocity of a moving particle is the rate of its displacement or the rate of change of its displacement with time. Therefore, velocity possesses both magnitude and direction and hence, is a vector. A particle is said to be moving with uniform velocity when it is moving along a straight line ..

When a particle possesses uniform motion, its velocity-time graph is a straight line parallel to the time axis, as illustrated in the figure below. ..

Scientists who investigate weather phenomenon are called meteorologists. To study a particular feature, may require an observation from a larger area. By combining great number of observations and analysing them by computers it is possible to get information about a large weather system. Satellites..