normal table distribution

A sample of 10 mathematics books of grade 7 had the following number of pages. Find the 98% confident interval for the variance of the pages. Assume that the variable is normally distributed. 1000 1320 590 820 1150 1570 1090 1585 995 1285 => between 38110 and 345769 or between 49895 ..

The lengths (in miles) of 10 rivers taken randomly are shown here. Find the 98% confidence interval for the variance and standard deviation. Assume that the variable is normally distributed. 1928 1728 1234 1110 1000 2340 1995 2005 1947 1857 => 82215 < σ 2 < 853095 ; 287 &..

A random sample of the assets (in millions of dollars) of 10 families of a colony is shown. Find the 80% confidence interval for the variance of the assets. Assume that the variable is normally distributed. 0.5 1 0.4 1.3 0.8 1.2 0.9 2 0.7 1.5 => between 0.158 and 0.529 or between 0.1..

The heights of a group of young women aged 16 - 25 years was found to be normally distributed with a mean of 62.4 inches and a standard deviation of 1.5 inches. Find the probability of a woman having a height between 60 inches and 65 inches, using the standard normal h..

The average monthly temperature(°F) of 15 cities in the month of April is shown here. Find the 80% confidence interval for the standard deviation for the temperature. Assume that the variable is normally distributed. 61.6 48.3 47.8 65 47.6 48.1 68.5 52 66 75.7 46.6 52.5 53.1 58.9..

Find the area under the normal distribution curve shown in the figure. => 15.59% or 9.01% or 84.41% or 94.41%..

How many modes does a normal distribution curve have? => zero or more than two or one or two..

Which of the following curves represent a normal distribution curve? => Graph 3 or Graph 1 or Graph 4 or Graph 2..

Cattle Breed Distribution Milch Breeds Gir Gujarat, Rajasthan Sahiwal Punjab, Haryana, Uttar Pradesh Red Sindhi Andhra Pradesh Draught Breeds Malvi Rajasthan, Madhya Pradesh Nageri Delhi, Haryana, Uttar Pradesh Hallikar Karna..

The number which tells us how many times a particular data appears is called the frequency. For example, 2 marks have been scored by five students which means marks 2 occurs five times. Therefore, the frequency of score 2 is five. Similarly, the frequency of marks 5 is three because three stu..