A professor finds that the average sat score among all

Reference no: EM13636266

A professor finds that the average SAT score among all students attending his college is 1150±150 (?±?). He polls his class of 25 students and finds that the average SAT score is 1200. Suppose he computes a one-independent sample z-test at a .05 level of significance. What is his decision?

A. to reject the nullhypothesis

B. to retain the null hypothesis

C. to reject the null hypothesis for a two-tailed test, but to retain the null hypothesis for an upper-tailed test

D. to reject the null hypothesis for an upper-tailed test, but to retain the null hypothesis for a two-tailed test

Reference no: EM13636266

Questions Cloud

It is observed that the wire stretches 45 mm when a tensile : an 18-m-long steel wire of 5-mm diameter is to be used in the manufacture of a pre-stressed concrete beam. it is

The specific heats above and below the freezing point are : a mass of 1200kg of fish at 20 celsius is to be frozen solid at -20 celsius. the freezing point of the fish is -2.2

Why do we add cyclohexene to the trans-stilbene with : why do we add cyclohexene to the trans-stilbene with bromine in dichloromethane reaction mixture? what additional

A researcher randomly selects a sample of participants from : a researcher randomly selects a sample of participants from a population with a variance of 4. if the researcher

A professor finds that the average sat score among all : a professor finds that the average sat score among all students attending his college is 1150plusmn150 ?plusmn?. he

Thiamine hydrochloride c12h18on4scl2is a water soluble : thiamine hydrochloride c12h18on4scl2is a water soluble form of thiamine vitamin b1 ka3.37 x 10-7.how many grams of the

How do you synthesize 1-phenylcyclopropanol from benzene : how do you synthesize 1-phenylcyclopropanol from benzene using any solvents reagents needed or alcohols containing no

How high was the elevator when the stone was released with : a stone is released from an elevator moving up at a speed of 12 fts and reaches the bottom of the shaft in 2.5 s. a how

The probability that someone in the human population has : the probability that someone in the human population has blood type ab is about p .08 the probability that someone has

User Account

All Pages