What is the probability that the experiment will find

Assignment Help Applied Statistics

Reference no: EM13496141

Does delaying oral practice hinder learning a foreign language? Researchers randomly assigned 25 beginning students of Russian to begin speaking practice immediately and another 25 to delay speaking for four weeks. At the end of the semester both groups took a standard test of comprehension of spoken Russian. Suppose that in the population of all beginning students, the test scores for early speaking vary according to the N(32, 6) distribution and scores for delayed speaking have the N(29, 5) distribution.
(a) What is the sampling distribution of the mean score x in the early-speaking group in many repetitions of the experiment? What is the sampling distribution of the mean score yin the delayed-speaking group?
(b) If the experiment were repeated many times, what would be the sampling distribution of the difference y-xbetween the mean scores in the two groups?
(c) What is the probability that the experiment will find (misleadingly) that the mean score for delayed speaking is at least as large as that for early speaking?

Reference no: EM13496141

Questions Cloud

The effectiveness of cigarette filters : What does the result suggest about the effectiveness of cigarette filters?

Three approaches always result in the same conclusion : Will all three approaches always result in the same conclusion? Explain.

Determine the amount of net income : Determine the amount of net income that Rhea and Sellevaeg would receive under each of the following independent assumptions.

What is the highest possible volatility of your portfolio : Suppose Ford Motor stock has an expected return of 20% and a volatility of 40%, and Molson Coors Brewing has an expected return of 10% and a volatility of 30%. If the two stocks are uncorrelated,

What is the probability that the experiment will find : What is the probability that the experiment will find (misleadingly) that the mean score for delayed speaking is at least as large as that for early speaking?

Promote anti-american propaganda : A Russian SVR agent has 45 million dollars which he can spend to bribe academics, politicians, and bloggers to spread disinformation and to promote anti-American propaganda

Find the image distance of the truck : The outside mirror on the passenger side of a car is convex and has a focal length of -8.5 m. Find the image distance of the truck

The dataset length.jmp contains a simple random sample : The dataset Length.jmp contains a simple random sample of 50 stainless steel sheet metal screw from Crown Bolt

The information on 50 beanie babies given in beanie xls : Beanie Babies are toy stuffed animals that have become valuable collector's items. Beanie World Magazine provided the information on 50 Beanie Babies given in beanie.xls.

User Account

All Pages