2 populations

Find the F-test value for testing the difference between two population variances. The data shows the two samples from each of the populations. => 1.11 or 0.63 or 2.38 or 2.16..

If the degrees of freedom of the numerator is 15 and that of the denominator is 24 for testing the variances of two populations using F-test, then find the test value and the critical value at 95% confidence. The sample variances are 45 and 78. => 2.65, 1.83 or 1.73, h..

If two samples have means of 30 and 28 and variances of 12 and 14, with 20 and 25 as the sizes, find the z score for difference of two population means. => 2.154 or 2.075 or 2.320 or 1.857..

The population of an island is 200,000 in the year 2000. The population is increasing at the rate of 2% per year. What will be the population in the year 2030? => 362,000 or 460,000 or 500,000 or 400,000..

The population of pigeons increases by 3% each year. If the initial population of pigeons is 400, then find the population after 2 years. => 422 or 424 or 420 or 426..

Two populations have means of 29.5 and 28 and variances of 6 and 7.8. If the sizes are 30 and 43, then find the z score values. Verify whether the mean of the first population is greater than that of the other at 99% of confidence or not. => 3.93, not greater or 0.57, ..

The table represents the increase in the population of the City 1 and the City 2 in the United States from 1990 to 2000. What is the percentage increase in the population of the City 2 only, from 1990 to 2000? => 18% or 16.67% or 15% or 17.67%..

The population of a city in 1994 is about 1.4 million with annual growth rate 2%. If the growth rate of population continues, when will the population of the city be closest to 1.6 million? => 2000 or 2002 or 2001 or 1998..

The population of a city in 1994 is about 1.3 million with annual growth rate 2%. If the growth rate of population continues, when will the population of the city be closest to 1.5 million? => 1998 or 2002 or 2001 or 2000..

The population of a country in 1990 was 82.2 million. 80% of the population is aged between 25 and 75 years. Find the number of people aged between 25 and 75 years. => 64 million or 66 million or 67 million or None of the above..