A random sample of 75 students at a private elementary

Reference no: EM13625619

A researcher is interested in whether students who attend private elementary schools do any better on s standard test of intelligence than the general population of elementary school children. A random sample of 75 students at a private elementary school is tested and has a mean intelligence test score of 103.5. The average for the general population of elementary school children is 100 (? = 15).

a) Is this a one- or a two- tailed tests?

b) What are Ho and Ha for this study?

c) Compute zobt

d) What is zcv?

e) Should Ho be rejected? What should the researcher conclude?

f) Calculate the 95% confidence interval for the population mean, based on the sample mean

Reference no: EM13625619

Questions Cloud

Ball a glances of b at an angle of 30 degree north at its : ball a with a mass of 0.500kg is moving east at velocity of 0.8 ms. it strikes ball b also of mass 0.5 kg which is

Relative a reference frame the recorded motion of p for the : a ship tracks an unmanned vehicle p in the water. relative a reference frame the recorded motion of p for the first t

Connectign the outer surface to ground will result in a : a charge q is located at the center of a hollow thick uncharged spherical shell thickness b-a. induction will lead to

Ahigh-speed jet of water at an absolute velocity of vjet : a cart is moving at a constant absolute velocity vcart 5 kmh to the right. a high-speed jet of water at an absolute

A random sample of 75 students at a private elementary : a researcher is interested in whether students who attend private elementary schools do any better on s standard test

You produce an image of the sun on a screen using a thin : you produce an image of the sun on a screen using a thin lens whose focal length is 21.6 cm. what is the diameter of

What would be the maximum spring compression if the mass : a mass of 5 lbm is released when it is just in contact with a spring of stiffness 25 lbfft that is attached to the

A secondary winding of 2 turns encircles the solenoid at : a very long straight solenoid with a cross-sectional area of 6.25cm 2 is wound with 30 turns of wire per centimeter and

A piston-cylinder device contains an ideal gas the gas : a piston-cylinder device contains an ideal gas. the gas undergoes two successive cooling processes by rejecting heat to

User Account

All Pages